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d3e51161 HS |
1 | /* |
2 | * Pinctrl driver for Rockchip SoCs | |
3 | * | |
4 | * Copyright (c) 2013 MundoReader S.L. | |
5 | * Author: Heiko Stuebner <heiko@sntech.de> | |
6 | * | |
7 | * With some ideas taken from pinctrl-samsung: | |
8 | * Copyright (c) 2012 Samsung Electronics Co., Ltd. | |
9 | * http://www.samsung.com | |
10 | * Copyright (c) 2012 Linaro Ltd | |
11 | * http://www.linaro.org | |
12 | * | |
13 | * and pinctrl-at91: | |
14 | * Copyright (C) 2011-2012 Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> | |
15 | * | |
16 | * This program is free software; you can redistribute it and/or modify | |
17 | * it under the terms of the GNU General Public License version 2 as published | |
18 | * by the Free Software Foundation. | |
19 | * | |
20 | * This program is distributed in the hope that it will be useful, | |
21 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
22 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
23 | * GNU General Public License for more details. | |
24 | */ | |
25 | ||
26 | #include <linux/module.h> | |
27 | #include <linux/platform_device.h> | |
28 | #include <linux/io.h> | |
29 | #include <linux/bitops.h> | |
30 | #include <linux/gpio.h> | |
31 | #include <linux/of_address.h> | |
32 | #include <linux/of_irq.h> | |
33 | #include <linux/pinctrl/machine.h> | |
34 | #include <linux/pinctrl/pinconf.h> | |
35 | #include <linux/pinctrl/pinctrl.h> | |
36 | #include <linux/pinctrl/pinmux.h> | |
37 | #include <linux/pinctrl/pinconf-generic.h> | |
38 | #include <linux/irqchip/chained_irq.h> | |
7e865abb | 39 | #include <linux/clk.h> |
751a99ab | 40 | #include <linux/regmap.h> |
14dee867 | 41 | #include <linux/mfd/syscon.h> |
d3e51161 HS |
42 | #include <dt-bindings/pinctrl/rockchip.h> |
43 | ||
44 | #include "core.h" | |
45 | #include "pinconf.h" | |
46 | ||
47 | /* GPIO control registers */ | |
48 | #define GPIO_SWPORT_DR 0x00 | |
49 | #define GPIO_SWPORT_DDR 0x04 | |
50 | #define GPIO_INTEN 0x30 | |
51 | #define GPIO_INTMASK 0x34 | |
52 | #define GPIO_INTTYPE_LEVEL 0x38 | |
53 | #define GPIO_INT_POLARITY 0x3c | |
54 | #define GPIO_INT_STATUS 0x40 | |
55 | #define GPIO_INT_RAWSTATUS 0x44 | |
56 | #define GPIO_DEBOUNCE 0x48 | |
57 | #define GPIO_PORTS_EOI 0x4c | |
58 | #define GPIO_EXT_PORT 0x50 | |
59 | #define GPIO_LS_SYNC 0x60 | |
60 | ||
a282926d HS |
61 | enum rockchip_pinctrl_type { |
62 | RK2928, | |
63 | RK3066B, | |
64 | RK3188, | |
66d750e1 | 65 | RK3288, |
a282926d HS |
66 | }; |
67 | ||
fc72c923 HS |
68 | /** |
69 | * Encode variants of iomux registers into a type variable | |
70 | */ | |
71 | #define IOMUX_GPIO_ONLY BIT(0) | |
03716e1d | 72 | #define IOMUX_WIDTH_4BIT BIT(1) |
95ec8ae4 | 73 | #define IOMUX_SOURCE_PMU BIT(2) |
62f49226 | 74 | #define IOMUX_UNROUTED BIT(3) |
fc72c923 HS |
75 | |
76 | /** | |
77 | * @type: iomux variant using IOMUX_* constants | |
6bc0d121 HS |
78 | * @offset: if initialized to -1 it will be autocalculated, by specifying |
79 | * an initial offset value the relevant source offset can be reset | |
80 | * to a new value for autocalculating the following iomux registers. | |
fc72c923 HS |
81 | */ |
82 | struct rockchip_iomux { | |
83 | int type; | |
6bc0d121 | 84 | int offset; |
65fca613 HS |
85 | }; |
86 | ||
d3e51161 HS |
87 | /** |
88 | * @reg_base: register base of the gpio bank | |
6ca5274d | 89 | * @reg_pull: optional separate register for additional pull settings |
d3e51161 HS |
90 | * @clk: clock of the gpio bank |
91 | * @irq: interrupt of the gpio bank | |
68bda47c | 92 | * @saved_enables: Saved content of GPIO_INTEN at suspend time. |
d3e51161 HS |
93 | * @pin_base: first pin number |
94 | * @nr_pins: number of pins in this bank | |
95 | * @name: name of the bank | |
96 | * @bank_num: number of the bank, to account for holes | |
fc72c923 | 97 | * @iomux: array describing the 4 iomux sources of the bank |
d3e51161 HS |
98 | * @valid: are all necessary informations present |
99 | * @of_node: dt node of this bank | |
100 | * @drvdata: common pinctrl basedata | |
101 | * @domain: irqdomain of the gpio bank | |
102 | * @gpio_chip: gpiolib chip | |
103 | * @grange: gpio range | |
104 | * @slock: spinlock for the gpio bank | |
105 | */ | |
106 | struct rockchip_pin_bank { | |
107 | void __iomem *reg_base; | |
751a99ab | 108 | struct regmap *regmap_pull; |
d3e51161 HS |
109 | struct clk *clk; |
110 | int irq; | |
68bda47c | 111 | u32 saved_enables; |
d3e51161 HS |
112 | u32 pin_base; |
113 | u8 nr_pins; | |
114 | char *name; | |
115 | u8 bank_num; | |
fc72c923 | 116 | struct rockchip_iomux iomux[4]; |
d3e51161 HS |
117 | bool valid; |
118 | struct device_node *of_node; | |
119 | struct rockchip_pinctrl *drvdata; | |
120 | struct irq_domain *domain; | |
121 | struct gpio_chip gpio_chip; | |
122 | struct pinctrl_gpio_range grange; | |
123 | spinlock_t slock; | |
5a927501 | 124 | u32 toggle_edge_mode; |
d3e51161 HS |
125 | }; |
126 | ||
127 | #define PIN_BANK(id, pins, label) \ | |
128 | { \ | |
129 | .bank_num = id, \ | |
130 | .nr_pins = pins, \ | |
131 | .name = label, \ | |
6bc0d121 HS |
132 | .iomux = { \ |
133 | { .offset = -1 }, \ | |
134 | { .offset = -1 }, \ | |
135 | { .offset = -1 }, \ | |
136 | { .offset = -1 }, \ | |
137 | }, \ | |
d3e51161 HS |
138 | } |
139 | ||
fc72c923 HS |
140 | #define PIN_BANK_IOMUX_FLAGS(id, pins, label, iom0, iom1, iom2, iom3) \ |
141 | { \ | |
142 | .bank_num = id, \ | |
143 | .nr_pins = pins, \ | |
144 | .name = label, \ | |
145 | .iomux = { \ | |
6bc0d121 HS |
146 | { .type = iom0, .offset = -1 }, \ |
147 | { .type = iom1, .offset = -1 }, \ | |
148 | { .type = iom2, .offset = -1 }, \ | |
149 | { .type = iom3, .offset = -1 }, \ | |
fc72c923 HS |
150 | }, \ |
151 | } | |
152 | ||
d3e51161 | 153 | /** |
d3e51161 HS |
154 | */ |
155 | struct rockchip_pin_ctrl { | |
156 | struct rockchip_pin_bank *pin_banks; | |
157 | u32 nr_banks; | |
158 | u32 nr_pins; | |
159 | char *label; | |
a282926d | 160 | enum rockchip_pinctrl_type type; |
95ec8ae4 HS |
161 | int grf_mux_offset; |
162 | int pmu_mux_offset; | |
751a99ab HS |
163 | void (*pull_calc_reg)(struct rockchip_pin_bank *bank, |
164 | int pin_num, struct regmap **regmap, | |
165 | int *reg, u8 *bit); | |
d3e51161 HS |
166 | }; |
167 | ||
168 | struct rockchip_pin_config { | |
169 | unsigned int func; | |
170 | unsigned long *configs; | |
171 | unsigned int nconfigs; | |
172 | }; | |
173 | ||
174 | /** | |
175 | * struct rockchip_pin_group: represent group of pins of a pinmux function. | |
176 | * @name: name of the pin group, used to lookup the group. | |
177 | * @pins: the pins included in this group. | |
178 | * @npins: number of pins included in this group. | |
179 | * @func: the mux function number to be programmed when selected. | |
180 | * @configs: the config values to be set for each pin | |
181 | * @nconfigs: number of configs for each pin | |
182 | */ | |
183 | struct rockchip_pin_group { | |
184 | const char *name; | |
185 | unsigned int npins; | |
186 | unsigned int *pins; | |
187 | struct rockchip_pin_config *data; | |
188 | }; | |
189 | ||
190 | /** | |
191 | * struct rockchip_pmx_func: represent a pin function. | |
192 | * @name: name of the pin function, used to lookup the function. | |
193 | * @groups: one or more names of pin groups that provide this function. | |
194 | * @num_groups: number of groups included in @groups. | |
195 | */ | |
196 | struct rockchip_pmx_func { | |
197 | const char *name; | |
198 | const char **groups; | |
199 | u8 ngroups; | |
200 | }; | |
201 | ||
202 | struct rockchip_pinctrl { | |
751a99ab | 203 | struct regmap *regmap_base; |
bfc7a42a | 204 | int reg_size; |
751a99ab | 205 | struct regmap *regmap_pull; |
14dee867 | 206 | struct regmap *regmap_pmu; |
d3e51161 HS |
207 | struct device *dev; |
208 | struct rockchip_pin_ctrl *ctrl; | |
209 | struct pinctrl_desc pctl; | |
210 | struct pinctrl_dev *pctl_dev; | |
211 | struct rockchip_pin_group *groups; | |
212 | unsigned int ngroups; | |
213 | struct rockchip_pmx_func *functions; | |
214 | unsigned int nfunctions; | |
215 | }; | |
216 | ||
751a99ab HS |
217 | static struct regmap_config rockchip_regmap_config = { |
218 | .reg_bits = 32, | |
219 | .val_bits = 32, | |
220 | .reg_stride = 4, | |
221 | }; | |
222 | ||
d3e51161 HS |
223 | static inline struct rockchip_pin_bank *gc_to_pin_bank(struct gpio_chip *gc) |
224 | { | |
225 | return container_of(gc, struct rockchip_pin_bank, gpio_chip); | |
226 | } | |
227 | ||
228 | static const inline struct rockchip_pin_group *pinctrl_name_to_group( | |
229 | const struct rockchip_pinctrl *info, | |
230 | const char *name) | |
231 | { | |
d3e51161 HS |
232 | int i; |
233 | ||
234 | for (i = 0; i < info->ngroups; i++) { | |
1cb95395 AL |
235 | if (!strcmp(info->groups[i].name, name)) |
236 | return &info->groups[i]; | |
d3e51161 HS |
237 | } |
238 | ||
1cb95395 | 239 | return NULL; |
d3e51161 HS |
240 | } |
241 | ||
242 | /* | |
243 | * given a pin number that is local to a pin controller, find out the pin bank | |
244 | * and the register base of the pin bank. | |
245 | */ | |
246 | static struct rockchip_pin_bank *pin_to_bank(struct rockchip_pinctrl *info, | |
247 | unsigned pin) | |
248 | { | |
249 | struct rockchip_pin_bank *b = info->ctrl->pin_banks; | |
250 | ||
51578b9b | 251 | while (pin >= (b->pin_base + b->nr_pins)) |
d3e51161 HS |
252 | b++; |
253 | ||
254 | return b; | |
255 | } | |
256 | ||
257 | static struct rockchip_pin_bank *bank_num_to_bank( | |
258 | struct rockchip_pinctrl *info, | |
259 | unsigned num) | |
260 | { | |
261 | struct rockchip_pin_bank *b = info->ctrl->pin_banks; | |
262 | int i; | |
263 | ||
1cb95395 | 264 | for (i = 0; i < info->ctrl->nr_banks; i++, b++) { |
d3e51161 | 265 | if (b->bank_num == num) |
1cb95395 | 266 | return b; |
d3e51161 HS |
267 | } |
268 | ||
1cb95395 | 269 | return ERR_PTR(-EINVAL); |
d3e51161 HS |
270 | } |
271 | ||
272 | /* | |
273 | * Pinctrl_ops handling | |
274 | */ | |
275 | ||
276 | static int rockchip_get_groups_count(struct pinctrl_dev *pctldev) | |
277 | { | |
278 | struct rockchip_pinctrl *info = pinctrl_dev_get_drvdata(pctldev); | |
279 | ||
280 | return info->ngroups; | |
281 | } | |
282 | ||
283 | static const char *rockchip_get_group_name(struct pinctrl_dev *pctldev, | |
284 | unsigned selector) | |
285 | { | |
286 | struct rockchip_pinctrl *info = pinctrl_dev_get_drvdata(pctldev); | |
287 | ||
288 | return info->groups[selector].name; | |
289 | } | |
290 | ||
291 | static int rockchip_get_group_pins(struct pinctrl_dev *pctldev, | |
292 | unsigned selector, const unsigned **pins, | |
293 | unsigned *npins) | |
294 | { | |
295 | struct rockchip_pinctrl *info = pinctrl_dev_get_drvdata(pctldev); | |
296 | ||
297 | if (selector >= info->ngroups) | |
298 | return -EINVAL; | |
299 | ||
300 | *pins = info->groups[selector].pins; | |
301 | *npins = info->groups[selector].npins; | |
302 | ||
303 | return 0; | |
304 | } | |
305 | ||
306 | static int rockchip_dt_node_to_map(struct pinctrl_dev *pctldev, | |
307 | struct device_node *np, | |
308 | struct pinctrl_map **map, unsigned *num_maps) | |
309 | { | |
310 | struct rockchip_pinctrl *info = pinctrl_dev_get_drvdata(pctldev); | |
311 | const struct rockchip_pin_group *grp; | |
312 | struct pinctrl_map *new_map; | |
313 | struct device_node *parent; | |
314 | int map_num = 1; | |
315 | int i; | |
316 | ||
317 | /* | |
318 | * first find the group of this node and check if we need to create | |
319 | * config maps for pins | |
320 | */ | |
321 | grp = pinctrl_name_to_group(info, np->name); | |
322 | if (!grp) { | |
323 | dev_err(info->dev, "unable to find group for node %s\n", | |
324 | np->name); | |
325 | return -EINVAL; | |
326 | } | |
327 | ||
328 | map_num += grp->npins; | |
329 | new_map = devm_kzalloc(pctldev->dev, sizeof(*new_map) * map_num, | |
330 | GFP_KERNEL); | |
331 | if (!new_map) | |
332 | return -ENOMEM; | |
333 | ||
334 | *map = new_map; | |
335 | *num_maps = map_num; | |
336 | ||
337 | /* create mux map */ | |
338 | parent = of_get_parent(np); | |
339 | if (!parent) { | |
340 | devm_kfree(pctldev->dev, new_map); | |
341 | return -EINVAL; | |
342 | } | |
343 | new_map[0].type = PIN_MAP_TYPE_MUX_GROUP; | |
344 | new_map[0].data.mux.function = parent->name; | |
345 | new_map[0].data.mux.group = np->name; | |
346 | of_node_put(parent); | |
347 | ||
348 | /* create config map */ | |
349 | new_map++; | |
350 | for (i = 0; i < grp->npins; i++) { | |
351 | new_map[i].type = PIN_MAP_TYPE_CONFIGS_PIN; | |
352 | new_map[i].data.configs.group_or_pin = | |
353 | pin_get_name(pctldev, grp->pins[i]); | |
354 | new_map[i].data.configs.configs = grp->data[i].configs; | |
355 | new_map[i].data.configs.num_configs = grp->data[i].nconfigs; | |
356 | } | |
357 | ||
358 | dev_dbg(pctldev->dev, "maps: function %s group %s num %d\n", | |
359 | (*map)->data.mux.function, (*map)->data.mux.group, map_num); | |
360 | ||
361 | return 0; | |
362 | } | |
363 | ||
364 | static void rockchip_dt_free_map(struct pinctrl_dev *pctldev, | |
365 | struct pinctrl_map *map, unsigned num_maps) | |
366 | { | |
367 | } | |
368 | ||
369 | static const struct pinctrl_ops rockchip_pctrl_ops = { | |
370 | .get_groups_count = rockchip_get_groups_count, | |
371 | .get_group_name = rockchip_get_group_name, | |
372 | .get_group_pins = rockchip_get_group_pins, | |
373 | .dt_node_to_map = rockchip_dt_node_to_map, | |
374 | .dt_free_map = rockchip_dt_free_map, | |
375 | }; | |
376 | ||
377 | /* | |
378 | * Hardware access | |
379 | */ | |
380 | ||
a076e2ed HS |
381 | static int rockchip_get_mux(struct rockchip_pin_bank *bank, int pin) |
382 | { | |
383 | struct rockchip_pinctrl *info = bank->drvdata; | |
fc72c923 | 384 | int iomux_num = (pin / 8); |
95ec8ae4 | 385 | struct regmap *regmap; |
751a99ab | 386 | unsigned int val; |
03716e1d | 387 | int reg, ret, mask; |
a076e2ed HS |
388 | u8 bit; |
389 | ||
fc72c923 HS |
390 | if (iomux_num > 3) |
391 | return -EINVAL; | |
392 | ||
62f49226 HS |
393 | if (bank->iomux[iomux_num].type & IOMUX_UNROUTED) { |
394 | dev_err(info->dev, "pin %d is unrouted\n", pin); | |
395 | return -EINVAL; | |
396 | } | |
397 | ||
fc72c923 | 398 | if (bank->iomux[iomux_num].type & IOMUX_GPIO_ONLY) |
a076e2ed HS |
399 | return RK_FUNC_GPIO; |
400 | ||
95ec8ae4 HS |
401 | regmap = (bank->iomux[iomux_num].type & IOMUX_SOURCE_PMU) |
402 | ? info->regmap_pmu : info->regmap_base; | |
403 | ||
a076e2ed | 404 | /* get basic quadrupel of mux registers and the correct reg inside */ |
03716e1d | 405 | mask = (bank->iomux[iomux_num].type & IOMUX_WIDTH_4BIT) ? 0xf : 0x3; |
6bc0d121 | 406 | reg = bank->iomux[iomux_num].offset; |
03716e1d HS |
407 | if (bank->iomux[iomux_num].type & IOMUX_WIDTH_4BIT) { |
408 | if ((pin % 8) >= 4) | |
409 | reg += 0x4; | |
410 | bit = (pin % 4) * 4; | |
411 | } else { | |
412 | bit = (pin % 8) * 2; | |
413 | } | |
a076e2ed | 414 | |
95ec8ae4 | 415 | ret = regmap_read(regmap, reg, &val); |
751a99ab HS |
416 | if (ret) |
417 | return ret; | |
418 | ||
03716e1d | 419 | return ((val >> bit) & mask); |
a076e2ed HS |
420 | } |
421 | ||
d3e51161 HS |
422 | /* |
423 | * Set a new mux function for a pin. | |
424 | * | |
425 | * The register is divided into the upper and lower 16 bit. When changing | |
426 | * a value, the previous register value is not read and changed. Instead | |
427 | * it seems the changed bits are marked in the upper 16 bit, while the | |
428 | * changed value gets set in the same offset in the lower 16 bit. | |
429 | * All pin settings seem to be 2 bit wide in both the upper and lower | |
430 | * parts. | |
431 | * @bank: pin bank to change | |
432 | * @pin: pin to change | |
433 | * @mux: new mux function to set | |
434 | */ | |
14797189 | 435 | static int rockchip_set_mux(struct rockchip_pin_bank *bank, int pin, int mux) |
d3e51161 HS |
436 | { |
437 | struct rockchip_pinctrl *info = bank->drvdata; | |
fc72c923 | 438 | int iomux_num = (pin / 8); |
95ec8ae4 | 439 | struct regmap *regmap; |
03716e1d | 440 | int reg, ret, mask; |
d3e51161 HS |
441 | unsigned long flags; |
442 | u8 bit; | |
99e872d9 | 443 | u32 data, rmask; |
d3e51161 | 444 | |
fc72c923 HS |
445 | if (iomux_num > 3) |
446 | return -EINVAL; | |
447 | ||
62f49226 HS |
448 | if (bank->iomux[iomux_num].type & IOMUX_UNROUTED) { |
449 | dev_err(info->dev, "pin %d is unrouted\n", pin); | |
450 | return -EINVAL; | |
451 | } | |
452 | ||
fc72c923 | 453 | if (bank->iomux[iomux_num].type & IOMUX_GPIO_ONLY) { |
c4a532de HS |
454 | if (mux != RK_FUNC_GPIO) { |
455 | dev_err(info->dev, | |
456 | "pin %d only supports a gpio mux\n", pin); | |
457 | return -ENOTSUPP; | |
458 | } else { | |
459 | return 0; | |
460 | } | |
461 | } | |
462 | ||
d3e51161 HS |
463 | dev_dbg(info->dev, "setting mux of GPIO%d-%d to %d\n", |
464 | bank->bank_num, pin, mux); | |
465 | ||
95ec8ae4 HS |
466 | regmap = (bank->iomux[iomux_num].type & IOMUX_SOURCE_PMU) |
467 | ? info->regmap_pmu : info->regmap_base; | |
468 | ||
d3e51161 | 469 | /* get basic quadrupel of mux registers and the correct reg inside */ |
03716e1d | 470 | mask = (bank->iomux[iomux_num].type & IOMUX_WIDTH_4BIT) ? 0xf : 0x3; |
6bc0d121 | 471 | reg = bank->iomux[iomux_num].offset; |
03716e1d HS |
472 | if (bank->iomux[iomux_num].type & IOMUX_WIDTH_4BIT) { |
473 | if ((pin % 8) >= 4) | |
474 | reg += 0x4; | |
475 | bit = (pin % 4) * 4; | |
476 | } else { | |
477 | bit = (pin % 8) * 2; | |
478 | } | |
d3e51161 HS |
479 | |
480 | spin_lock_irqsave(&bank->slock, flags); | |
481 | ||
03716e1d | 482 | data = (mask << (bit + 16)); |
99e872d9 | 483 | rmask = data | (data >> 16); |
03716e1d | 484 | data |= (mux & mask) << bit; |
99e872d9 | 485 | ret = regmap_update_bits(regmap, reg, rmask, data); |
d3e51161 HS |
486 | |
487 | spin_unlock_irqrestore(&bank->slock, flags); | |
14797189 | 488 | |
751a99ab | 489 | return ret; |
d3e51161 HS |
490 | } |
491 | ||
a282926d HS |
492 | #define RK2928_PULL_OFFSET 0x118 |
493 | #define RK2928_PULL_PINS_PER_REG 16 | |
494 | #define RK2928_PULL_BANK_STRIDE 8 | |
495 | ||
496 | static void rk2928_calc_pull_reg_and_bit(struct rockchip_pin_bank *bank, | |
751a99ab HS |
497 | int pin_num, struct regmap **regmap, |
498 | int *reg, u8 *bit) | |
a282926d HS |
499 | { |
500 | struct rockchip_pinctrl *info = bank->drvdata; | |
501 | ||
751a99ab HS |
502 | *regmap = info->regmap_base; |
503 | *reg = RK2928_PULL_OFFSET; | |
a282926d HS |
504 | *reg += bank->bank_num * RK2928_PULL_BANK_STRIDE; |
505 | *reg += (pin_num / RK2928_PULL_PINS_PER_REG) * 4; | |
506 | ||
507 | *bit = pin_num % RK2928_PULL_PINS_PER_REG; | |
508 | }; | |
509 | ||
bfc7a42a | 510 | #define RK3188_PULL_OFFSET 0x164 |
6ca5274d HS |
511 | #define RK3188_PULL_BITS_PER_PIN 2 |
512 | #define RK3188_PULL_PINS_PER_REG 8 | |
513 | #define RK3188_PULL_BANK_STRIDE 16 | |
14dee867 | 514 | #define RK3188_PULL_PMU_OFFSET 0x64 |
6ca5274d HS |
515 | |
516 | static void rk3188_calc_pull_reg_and_bit(struct rockchip_pin_bank *bank, | |
751a99ab HS |
517 | int pin_num, struct regmap **regmap, |
518 | int *reg, u8 *bit) | |
6ca5274d HS |
519 | { |
520 | struct rockchip_pinctrl *info = bank->drvdata; | |
521 | ||
522 | /* The first 12 pins of the first bank are located elsewhere */ | |
fc72c923 | 523 | if (bank->bank_num == 0 && pin_num < 12) { |
14dee867 HS |
524 | *regmap = info->regmap_pmu ? info->regmap_pmu |
525 | : bank->regmap_pull; | |
526 | *reg = info->regmap_pmu ? RK3188_PULL_PMU_OFFSET : 0; | |
751a99ab | 527 | *reg += ((pin_num / RK3188_PULL_PINS_PER_REG) * 4); |
6ca5274d HS |
528 | *bit = pin_num % RK3188_PULL_PINS_PER_REG; |
529 | *bit *= RK3188_PULL_BITS_PER_PIN; | |
530 | } else { | |
751a99ab HS |
531 | *regmap = info->regmap_pull ? info->regmap_pull |
532 | : info->regmap_base; | |
533 | *reg = info->regmap_pull ? 0 : RK3188_PULL_OFFSET; | |
534 | ||
bfc7a42a HS |
535 | /* correct the offset, as it is the 2nd pull register */ |
536 | *reg -= 4; | |
6ca5274d HS |
537 | *reg += bank->bank_num * RK3188_PULL_BANK_STRIDE; |
538 | *reg += ((pin_num / RK3188_PULL_PINS_PER_REG) * 4); | |
539 | ||
540 | /* | |
541 | * The bits in these registers have an inverse ordering | |
542 | * with the lowest pin being in bits 15:14 and the highest | |
543 | * pin in bits 1:0 | |
544 | */ | |
545 | *bit = 7 - (pin_num % RK3188_PULL_PINS_PER_REG); | |
546 | *bit *= RK3188_PULL_BITS_PER_PIN; | |
547 | } | |
548 | } | |
549 | ||
304f077d HS |
550 | #define RK3288_PULL_OFFSET 0x140 |
551 | static void rk3288_calc_pull_reg_and_bit(struct rockchip_pin_bank *bank, | |
552 | int pin_num, struct regmap **regmap, | |
553 | int *reg, u8 *bit) | |
554 | { | |
555 | struct rockchip_pinctrl *info = bank->drvdata; | |
556 | ||
557 | /* The first 24 pins of the first bank are located in PMU */ | |
558 | if (bank->bank_num == 0) { | |
559 | *regmap = info->regmap_pmu; | |
560 | *reg = RK3188_PULL_PMU_OFFSET; | |
561 | ||
562 | *reg += ((pin_num / RK3188_PULL_PINS_PER_REG) * 4); | |
563 | *bit = pin_num % RK3188_PULL_PINS_PER_REG; | |
564 | *bit *= RK3188_PULL_BITS_PER_PIN; | |
565 | } else { | |
566 | *regmap = info->regmap_base; | |
567 | *reg = RK3288_PULL_OFFSET; | |
568 | ||
569 | /* correct the offset, as we're starting with the 2nd bank */ | |
570 | *reg -= 0x10; | |
571 | *reg += bank->bank_num * RK3188_PULL_BANK_STRIDE; | |
572 | *reg += ((pin_num / RK3188_PULL_PINS_PER_REG) * 4); | |
573 | ||
574 | *bit = (pin_num % RK3188_PULL_PINS_PER_REG); | |
575 | *bit *= RK3188_PULL_BITS_PER_PIN; | |
576 | } | |
577 | } | |
578 | ||
b547c800 HS |
579 | #define RK3288_DRV_PMU_OFFSET 0x70 |
580 | #define RK3288_DRV_GRF_OFFSET 0x1c0 | |
581 | #define RK3288_DRV_BITS_PER_PIN 2 | |
582 | #define RK3288_DRV_PINS_PER_REG 8 | |
583 | #define RK3288_DRV_BANK_STRIDE 16 | |
584 | static int rk3288_drv_list[] = { 2, 4, 8, 12 }; | |
585 | ||
586 | static void rk3288_calc_drv_reg_and_bit(struct rockchip_pin_bank *bank, | |
587 | int pin_num, struct regmap **regmap, | |
588 | int *reg, u8 *bit) | |
589 | { | |
590 | struct rockchip_pinctrl *info = bank->drvdata; | |
591 | ||
592 | /* The first 24 pins of the first bank are located in PMU */ | |
593 | if (bank->bank_num == 0) { | |
594 | *regmap = info->regmap_pmu; | |
595 | *reg = RK3288_DRV_PMU_OFFSET; | |
596 | ||
597 | *reg += ((pin_num / RK3288_DRV_PINS_PER_REG) * 4); | |
598 | *bit = pin_num % RK3288_DRV_PINS_PER_REG; | |
599 | *bit *= RK3288_DRV_BITS_PER_PIN; | |
600 | } else { | |
601 | *regmap = info->regmap_base; | |
602 | *reg = RK3288_DRV_GRF_OFFSET; | |
603 | ||
604 | /* correct the offset, as we're starting with the 2nd bank */ | |
605 | *reg -= 0x10; | |
606 | *reg += bank->bank_num * RK3288_DRV_BANK_STRIDE; | |
607 | *reg += ((pin_num / RK3288_DRV_PINS_PER_REG) * 4); | |
608 | ||
609 | *bit = (pin_num % RK3288_DRV_PINS_PER_REG); | |
610 | *bit *= RK3288_DRV_BITS_PER_PIN; | |
611 | } | |
612 | } | |
613 | ||
614 | static int rk3288_get_drive(struct rockchip_pin_bank *bank, int pin_num) | |
615 | { | |
616 | struct regmap *regmap; | |
617 | int reg, ret; | |
618 | u32 data; | |
619 | u8 bit; | |
620 | ||
621 | rk3288_calc_drv_reg_and_bit(bank, pin_num, ®map, ®, &bit); | |
622 | ||
623 | ret = regmap_read(regmap, reg, &data); | |
624 | if (ret) | |
625 | return ret; | |
626 | ||
627 | data >>= bit; | |
628 | data &= (1 << RK3288_DRV_BITS_PER_PIN) - 1; | |
629 | ||
630 | return rk3288_drv_list[data]; | |
631 | } | |
632 | ||
633 | static int rk3288_set_drive(struct rockchip_pin_bank *bank, int pin_num, | |
634 | int strength) | |
635 | { | |
636 | struct rockchip_pinctrl *info = bank->drvdata; | |
637 | struct regmap *regmap; | |
638 | unsigned long flags; | |
639 | int reg, ret, i; | |
99e872d9 | 640 | u32 data, rmask; |
b547c800 HS |
641 | u8 bit; |
642 | ||
643 | rk3288_calc_drv_reg_and_bit(bank, pin_num, ®map, ®, &bit); | |
644 | ||
645 | ret = -EINVAL; | |
646 | for (i = 0; i < ARRAY_SIZE(rk3288_drv_list); i++) { | |
647 | if (rk3288_drv_list[i] == strength) { | |
648 | ret = i; | |
649 | break; | |
650 | } | |
651 | } | |
652 | ||
653 | if (ret < 0) { | |
654 | dev_err(info->dev, "unsupported driver strength %d\n", | |
655 | strength); | |
656 | return ret; | |
657 | } | |
658 | ||
659 | spin_lock_irqsave(&bank->slock, flags); | |
660 | ||
661 | /* enable the write to the equivalent lower bits */ | |
662 | data = ((1 << RK3288_DRV_BITS_PER_PIN) - 1) << (bit + 16); | |
99e872d9 | 663 | rmask = data | (data >> 16); |
b547c800 HS |
664 | data |= (ret << bit); |
665 | ||
99e872d9 | 666 | ret = regmap_update_bits(regmap, reg, rmask, data); |
b547c800 HS |
667 | spin_unlock_irqrestore(&bank->slock, flags); |
668 | ||
669 | return ret; | |
670 | } | |
671 | ||
d3e51161 HS |
672 | static int rockchip_get_pull(struct rockchip_pin_bank *bank, int pin_num) |
673 | { | |
674 | struct rockchip_pinctrl *info = bank->drvdata; | |
675 | struct rockchip_pin_ctrl *ctrl = info->ctrl; | |
751a99ab HS |
676 | struct regmap *regmap; |
677 | int reg, ret; | |
d3e51161 | 678 | u8 bit; |
6ca5274d | 679 | u32 data; |
d3e51161 HS |
680 | |
681 | /* rk3066b does support any pulls */ | |
a282926d | 682 | if (ctrl->type == RK3066B) |
d3e51161 HS |
683 | return PIN_CONFIG_BIAS_DISABLE; |
684 | ||
751a99ab HS |
685 | ctrl->pull_calc_reg(bank, pin_num, ®map, ®, &bit); |
686 | ||
687 | ret = regmap_read(regmap, reg, &data); | |
688 | if (ret) | |
689 | return ret; | |
6ca5274d | 690 | |
a282926d HS |
691 | switch (ctrl->type) { |
692 | case RK2928: | |
751a99ab | 693 | return !(data & BIT(bit)) |
d3e51161 HS |
694 | ? PIN_CONFIG_BIAS_PULL_PIN_DEFAULT |
695 | : PIN_CONFIG_BIAS_DISABLE; | |
a282926d | 696 | case RK3188: |
66d750e1 | 697 | case RK3288: |
751a99ab | 698 | data >>= bit; |
6ca5274d HS |
699 | data &= (1 << RK3188_PULL_BITS_PER_PIN) - 1; |
700 | ||
701 | switch (data) { | |
702 | case 0: | |
703 | return PIN_CONFIG_BIAS_DISABLE; | |
704 | case 1: | |
705 | return PIN_CONFIG_BIAS_PULL_UP; | |
706 | case 2: | |
707 | return PIN_CONFIG_BIAS_PULL_DOWN; | |
708 | case 3: | |
709 | return PIN_CONFIG_BIAS_BUS_HOLD; | |
710 | } | |
711 | ||
712 | dev_err(info->dev, "unknown pull setting\n"); | |
d3e51161 | 713 | return -EIO; |
a282926d HS |
714 | default: |
715 | dev_err(info->dev, "unsupported pinctrl type\n"); | |
716 | return -EINVAL; | |
717 | }; | |
d3e51161 HS |
718 | } |
719 | ||
720 | static int rockchip_set_pull(struct rockchip_pin_bank *bank, | |
721 | int pin_num, int pull) | |
722 | { | |
723 | struct rockchip_pinctrl *info = bank->drvdata; | |
724 | struct rockchip_pin_ctrl *ctrl = info->ctrl; | |
751a99ab HS |
725 | struct regmap *regmap; |
726 | int reg, ret; | |
d3e51161 HS |
727 | unsigned long flags; |
728 | u8 bit; | |
99e872d9 | 729 | u32 data, rmask; |
d3e51161 HS |
730 | |
731 | dev_dbg(info->dev, "setting pull of GPIO%d-%d to %d\n", | |
732 | bank->bank_num, pin_num, pull); | |
733 | ||
734 | /* rk3066b does support any pulls */ | |
a282926d | 735 | if (ctrl->type == RK3066B) |
d3e51161 HS |
736 | return pull ? -EINVAL : 0; |
737 | ||
751a99ab | 738 | ctrl->pull_calc_reg(bank, pin_num, ®map, ®, &bit); |
6ca5274d | 739 | |
a282926d HS |
740 | switch (ctrl->type) { |
741 | case RK2928: | |
d3e51161 HS |
742 | spin_lock_irqsave(&bank->slock, flags); |
743 | ||
744 | data = BIT(bit + 16); | |
745 | if (pull == PIN_CONFIG_BIAS_DISABLE) | |
746 | data |= BIT(bit); | |
751a99ab | 747 | ret = regmap_write(regmap, reg, data); |
d3e51161 HS |
748 | |
749 | spin_unlock_irqrestore(&bank->slock, flags); | |
a282926d HS |
750 | break; |
751 | case RK3188: | |
66d750e1 | 752 | case RK3288: |
6ca5274d HS |
753 | spin_lock_irqsave(&bank->slock, flags); |
754 | ||
755 | /* enable the write to the equivalent lower bits */ | |
756 | data = ((1 << RK3188_PULL_BITS_PER_PIN) - 1) << (bit + 16); | |
99e872d9 | 757 | rmask = data | (data >> 16); |
6ca5274d HS |
758 | |
759 | switch (pull) { | |
760 | case PIN_CONFIG_BIAS_DISABLE: | |
761 | break; | |
762 | case PIN_CONFIG_BIAS_PULL_UP: | |
763 | data |= (1 << bit); | |
764 | break; | |
765 | case PIN_CONFIG_BIAS_PULL_DOWN: | |
766 | data |= (2 << bit); | |
767 | break; | |
768 | case PIN_CONFIG_BIAS_BUS_HOLD: | |
769 | data |= (3 << bit); | |
770 | break; | |
771 | default: | |
d32c3e26 | 772 | spin_unlock_irqrestore(&bank->slock, flags); |
6ca5274d HS |
773 | dev_err(info->dev, "unsupported pull setting %d\n", |
774 | pull); | |
775 | return -EINVAL; | |
776 | } | |
777 | ||
99e872d9 | 778 | ret = regmap_update_bits(regmap, reg, rmask, data); |
6ca5274d HS |
779 | |
780 | spin_unlock_irqrestore(&bank->slock, flags); | |
781 | break; | |
a282926d HS |
782 | default: |
783 | dev_err(info->dev, "unsupported pinctrl type\n"); | |
784 | return -EINVAL; | |
d3e51161 HS |
785 | } |
786 | ||
751a99ab | 787 | return ret; |
d3e51161 HS |
788 | } |
789 | ||
790 | /* | |
791 | * Pinmux_ops handling | |
792 | */ | |
793 | ||
794 | static int rockchip_pmx_get_funcs_count(struct pinctrl_dev *pctldev) | |
795 | { | |
796 | struct rockchip_pinctrl *info = pinctrl_dev_get_drvdata(pctldev); | |
797 | ||
798 | return info->nfunctions; | |
799 | } | |
800 | ||
801 | static const char *rockchip_pmx_get_func_name(struct pinctrl_dev *pctldev, | |
802 | unsigned selector) | |
803 | { | |
804 | struct rockchip_pinctrl *info = pinctrl_dev_get_drvdata(pctldev); | |
805 | ||
806 | return info->functions[selector].name; | |
807 | } | |
808 | ||
809 | static int rockchip_pmx_get_groups(struct pinctrl_dev *pctldev, | |
810 | unsigned selector, const char * const **groups, | |
811 | unsigned * const num_groups) | |
812 | { | |
813 | struct rockchip_pinctrl *info = pinctrl_dev_get_drvdata(pctldev); | |
814 | ||
815 | *groups = info->functions[selector].groups; | |
816 | *num_groups = info->functions[selector].ngroups; | |
817 | ||
818 | return 0; | |
819 | } | |
820 | ||
03e9f0ca LW |
821 | static int rockchip_pmx_set(struct pinctrl_dev *pctldev, unsigned selector, |
822 | unsigned group) | |
d3e51161 HS |
823 | { |
824 | struct rockchip_pinctrl *info = pinctrl_dev_get_drvdata(pctldev); | |
825 | const unsigned int *pins = info->groups[group].pins; | |
826 | const struct rockchip_pin_config *data = info->groups[group].data; | |
827 | struct rockchip_pin_bank *bank; | |
14797189 | 828 | int cnt, ret = 0; |
d3e51161 HS |
829 | |
830 | dev_dbg(info->dev, "enable function %s group %s\n", | |
831 | info->functions[selector].name, info->groups[group].name); | |
832 | ||
833 | /* | |
834 | * for each pin in the pin group selected, program the correspoding pin | |
835 | * pin function number in the config register. | |
836 | */ | |
837 | for (cnt = 0; cnt < info->groups[group].npins; cnt++) { | |
838 | bank = pin_to_bank(info, pins[cnt]); | |
14797189 HS |
839 | ret = rockchip_set_mux(bank, pins[cnt] - bank->pin_base, |
840 | data[cnt].func); | |
841 | if (ret) | |
842 | break; | |
843 | } | |
844 | ||
845 | if (ret) { | |
846 | /* revert the already done pin settings */ | |
847 | for (cnt--; cnt >= 0; cnt--) | |
848 | rockchip_set_mux(bank, pins[cnt] - bank->pin_base, 0); | |
849 | ||
850 | return ret; | |
d3e51161 HS |
851 | } |
852 | ||
853 | return 0; | |
854 | } | |
855 | ||
d3e51161 HS |
856 | /* |
857 | * The calls to gpio_direction_output() and gpio_direction_input() | |
858 | * leads to this function call (via the pinctrl_gpio_direction_{input|output}() | |
859 | * function called from the gpiolib interface). | |
860 | */ | |
e5c2c9db DA |
861 | static int _rockchip_pmx_gpio_set_direction(struct gpio_chip *chip, |
862 | int pin, bool input) | |
d3e51161 | 863 | { |
d3e51161 | 864 | struct rockchip_pin_bank *bank; |
e5c2c9db | 865 | int ret; |
fab262f5 | 866 | unsigned long flags; |
d3e51161 HS |
867 | u32 data; |
868 | ||
d3e51161 | 869 | bank = gc_to_pin_bank(chip); |
d3e51161 | 870 | |
14797189 HS |
871 | ret = rockchip_set_mux(bank, pin, RK_FUNC_GPIO); |
872 | if (ret < 0) | |
873 | return ret; | |
d3e51161 | 874 | |
fab262f5 DA |
875 | spin_lock_irqsave(&bank->slock, flags); |
876 | ||
d3e51161 HS |
877 | data = readl_relaxed(bank->reg_base + GPIO_SWPORT_DDR); |
878 | /* set bit to 1 for output, 0 for input */ | |
879 | if (!input) | |
880 | data |= BIT(pin); | |
881 | else | |
882 | data &= ~BIT(pin); | |
883 | writel_relaxed(data, bank->reg_base + GPIO_SWPORT_DDR); | |
884 | ||
fab262f5 DA |
885 | spin_unlock_irqrestore(&bank->slock, flags); |
886 | ||
d3e51161 HS |
887 | return 0; |
888 | } | |
889 | ||
e5c2c9db DA |
890 | static int rockchip_pmx_gpio_set_direction(struct pinctrl_dev *pctldev, |
891 | struct pinctrl_gpio_range *range, | |
892 | unsigned offset, bool input) | |
893 | { | |
894 | struct rockchip_pinctrl *info = pinctrl_dev_get_drvdata(pctldev); | |
895 | struct gpio_chip *chip; | |
896 | int pin; | |
897 | ||
898 | chip = range->gc; | |
899 | pin = offset - chip->base; | |
900 | dev_dbg(info->dev, "gpio_direction for pin %u as %s-%d to %s\n", | |
901 | offset, range->name, pin, input ? "input" : "output"); | |
902 | ||
903 | return _rockchip_pmx_gpio_set_direction(chip, offset - chip->base, | |
904 | input); | |
905 | } | |
906 | ||
d3e51161 HS |
907 | static const struct pinmux_ops rockchip_pmx_ops = { |
908 | .get_functions_count = rockchip_pmx_get_funcs_count, | |
909 | .get_function_name = rockchip_pmx_get_func_name, | |
910 | .get_function_groups = rockchip_pmx_get_groups, | |
03e9f0ca | 911 | .set_mux = rockchip_pmx_set, |
d3e51161 HS |
912 | .gpio_set_direction = rockchip_pmx_gpio_set_direction, |
913 | }; | |
914 | ||
915 | /* | |
916 | * Pinconf_ops handling | |
917 | */ | |
918 | ||
44b6d930 HS |
919 | static bool rockchip_pinconf_pull_valid(struct rockchip_pin_ctrl *ctrl, |
920 | enum pin_config_param pull) | |
921 | { | |
a282926d HS |
922 | switch (ctrl->type) { |
923 | case RK2928: | |
924 | return (pull == PIN_CONFIG_BIAS_PULL_PIN_DEFAULT || | |
925 | pull == PIN_CONFIG_BIAS_DISABLE); | |
926 | case RK3066B: | |
44b6d930 | 927 | return pull ? false : true; |
a282926d | 928 | case RK3188: |
66d750e1 | 929 | case RK3288: |
a282926d | 930 | return (pull != PIN_CONFIG_BIAS_PULL_PIN_DEFAULT); |
44b6d930 HS |
931 | } |
932 | ||
a282926d | 933 | return false; |
44b6d930 HS |
934 | } |
935 | ||
e5c2c9db | 936 | static void rockchip_gpio_set(struct gpio_chip *gc, unsigned offset, int value); |
a076e2ed HS |
937 | static int rockchip_gpio_get(struct gpio_chip *gc, unsigned offset); |
938 | ||
d3e51161 HS |
939 | /* set the pin config settings for a specified pin */ |
940 | static int rockchip_pinconf_set(struct pinctrl_dev *pctldev, unsigned int pin, | |
03b054e9 | 941 | unsigned long *configs, unsigned num_configs) |
d3e51161 HS |
942 | { |
943 | struct rockchip_pinctrl *info = pinctrl_dev_get_drvdata(pctldev); | |
944 | struct rockchip_pin_bank *bank = pin_to_bank(info, pin); | |
03b054e9 SY |
945 | enum pin_config_param param; |
946 | u16 arg; | |
947 | int i; | |
948 | int rc; | |
949 | ||
950 | for (i = 0; i < num_configs; i++) { | |
951 | param = pinconf_to_config_param(configs[i]); | |
952 | arg = pinconf_to_config_argument(configs[i]); | |
953 | ||
954 | switch (param) { | |
955 | case PIN_CONFIG_BIAS_DISABLE: | |
956 | rc = rockchip_set_pull(bank, pin - bank->pin_base, | |
957 | param); | |
958 | if (rc) | |
959 | return rc; | |
960 | break; | |
961 | case PIN_CONFIG_BIAS_PULL_UP: | |
962 | case PIN_CONFIG_BIAS_PULL_DOWN: | |
963 | case PIN_CONFIG_BIAS_PULL_PIN_DEFAULT: | |
6ca5274d | 964 | case PIN_CONFIG_BIAS_BUS_HOLD: |
03b054e9 SY |
965 | if (!rockchip_pinconf_pull_valid(info->ctrl, param)) |
966 | return -ENOTSUPP; | |
967 | ||
968 | if (!arg) | |
969 | return -EINVAL; | |
970 | ||
971 | rc = rockchip_set_pull(bank, pin - bank->pin_base, | |
972 | param); | |
973 | if (rc) | |
974 | return rc; | |
975 | break; | |
a076e2ed | 976 | case PIN_CONFIG_OUTPUT: |
e5c2c9db DA |
977 | rockchip_gpio_set(&bank->gpio_chip, |
978 | pin - bank->pin_base, arg); | |
979 | rc = _rockchip_pmx_gpio_set_direction(&bank->gpio_chip, | |
980 | pin - bank->pin_base, false); | |
a076e2ed HS |
981 | if (rc) |
982 | return rc; | |
983 | break; | |
b547c800 HS |
984 | case PIN_CONFIG_DRIVE_STRENGTH: |
985 | /* rk3288 is the first with per-pin drive-strength */ | |
986 | if (info->ctrl->type != RK3288) | |
987 | return -ENOTSUPP; | |
988 | ||
989 | rc = rk3288_set_drive(bank, pin - bank->pin_base, arg); | |
990 | if (rc < 0) | |
991 | return rc; | |
992 | break; | |
03b054e9 | 993 | default: |
44b6d930 | 994 | return -ENOTSUPP; |
03b054e9 SY |
995 | break; |
996 | } | |
997 | } /* for each config */ | |
d3e51161 HS |
998 | |
999 | return 0; | |
1000 | } | |
1001 | ||
1002 | /* get the pin config settings for a specified pin */ | |
1003 | static int rockchip_pinconf_get(struct pinctrl_dev *pctldev, unsigned int pin, | |
1004 | unsigned long *config) | |
1005 | { | |
1006 | struct rockchip_pinctrl *info = pinctrl_dev_get_drvdata(pctldev); | |
1007 | struct rockchip_pin_bank *bank = pin_to_bank(info, pin); | |
1008 | enum pin_config_param param = pinconf_to_config_param(*config); | |
dab3eba7 | 1009 | u16 arg; |
a076e2ed | 1010 | int rc; |
d3e51161 HS |
1011 | |
1012 | switch (param) { | |
1013 | case PIN_CONFIG_BIAS_DISABLE: | |
44b6d930 HS |
1014 | if (rockchip_get_pull(bank, pin - bank->pin_base) != param) |
1015 | return -EINVAL; | |
1016 | ||
dab3eba7 | 1017 | arg = 0; |
44b6d930 | 1018 | break; |
d3e51161 HS |
1019 | case PIN_CONFIG_BIAS_PULL_UP: |
1020 | case PIN_CONFIG_BIAS_PULL_DOWN: | |
1021 | case PIN_CONFIG_BIAS_PULL_PIN_DEFAULT: | |
6ca5274d | 1022 | case PIN_CONFIG_BIAS_BUS_HOLD: |
44b6d930 HS |
1023 | if (!rockchip_pinconf_pull_valid(info->ctrl, param)) |
1024 | return -ENOTSUPP; | |
d3e51161 | 1025 | |
44b6d930 | 1026 | if (rockchip_get_pull(bank, pin - bank->pin_base) != param) |
d3e51161 HS |
1027 | return -EINVAL; |
1028 | ||
dab3eba7 | 1029 | arg = 1; |
d3e51161 | 1030 | break; |
a076e2ed HS |
1031 | case PIN_CONFIG_OUTPUT: |
1032 | rc = rockchip_get_mux(bank, pin - bank->pin_base); | |
1033 | if (rc != RK_FUNC_GPIO) | |
1034 | return -EINVAL; | |
1035 | ||
1036 | rc = rockchip_gpio_get(&bank->gpio_chip, pin - bank->pin_base); | |
1037 | if (rc < 0) | |
1038 | return rc; | |
1039 | ||
1040 | arg = rc ? 1 : 0; | |
1041 | break; | |
b547c800 HS |
1042 | case PIN_CONFIG_DRIVE_STRENGTH: |
1043 | /* rk3288 is the first with per-pin drive-strength */ | |
1044 | if (info->ctrl->type != RK3288) | |
1045 | return -ENOTSUPP; | |
1046 | ||
1047 | rc = rk3288_get_drive(bank, pin - bank->pin_base); | |
1048 | if (rc < 0) | |
1049 | return rc; | |
1050 | ||
1051 | arg = rc; | |
1052 | break; | |
d3e51161 HS |
1053 | default: |
1054 | return -ENOTSUPP; | |
1055 | break; | |
1056 | } | |
1057 | ||
dab3eba7 HS |
1058 | *config = pinconf_to_config_packed(param, arg); |
1059 | ||
d3e51161 HS |
1060 | return 0; |
1061 | } | |
1062 | ||
1063 | static const struct pinconf_ops rockchip_pinconf_ops = { | |
1064 | .pin_config_get = rockchip_pinconf_get, | |
1065 | .pin_config_set = rockchip_pinconf_set, | |
ed62f2f2 | 1066 | .is_generic = true, |
d3e51161 HS |
1067 | }; |
1068 | ||
65fca613 HS |
1069 | static const struct of_device_id rockchip_bank_match[] = { |
1070 | { .compatible = "rockchip,gpio-bank" }, | |
6ca5274d | 1071 | { .compatible = "rockchip,rk3188-gpio-bank0" }, |
65fca613 HS |
1072 | {}, |
1073 | }; | |
d3e51161 HS |
1074 | |
1075 | static void rockchip_pinctrl_child_count(struct rockchip_pinctrl *info, | |
1076 | struct device_node *np) | |
1077 | { | |
1078 | struct device_node *child; | |
1079 | ||
1080 | for_each_child_of_node(np, child) { | |
65fca613 | 1081 | if (of_match_node(rockchip_bank_match, child)) |
d3e51161 HS |
1082 | continue; |
1083 | ||
1084 | info->nfunctions++; | |
1085 | info->ngroups += of_get_child_count(child); | |
1086 | } | |
1087 | } | |
1088 | ||
1089 | static int rockchip_pinctrl_parse_groups(struct device_node *np, | |
1090 | struct rockchip_pin_group *grp, | |
1091 | struct rockchip_pinctrl *info, | |
1092 | u32 index) | |
1093 | { | |
1094 | struct rockchip_pin_bank *bank; | |
1095 | int size; | |
1096 | const __be32 *list; | |
1097 | int num; | |
1098 | int i, j; | |
1099 | int ret; | |
1100 | ||
1101 | dev_dbg(info->dev, "group(%d): %s\n", index, np->name); | |
1102 | ||
1103 | /* Initialise group */ | |
1104 | grp->name = np->name; | |
1105 | ||
1106 | /* | |
1107 | * the binding format is rockchip,pins = <bank pin mux CONFIG>, | |
1108 | * do sanity check and calculate pins number | |
1109 | */ | |
1110 | list = of_get_property(np, "rockchip,pins", &size); | |
1111 | /* we do not check return since it's safe node passed down */ | |
1112 | size /= sizeof(*list); | |
1113 | if (!size || size % 4) { | |
1114 | dev_err(info->dev, "wrong pins number or pins and configs should be by 4\n"); | |
1115 | return -EINVAL; | |
1116 | } | |
1117 | ||
1118 | grp->npins = size / 4; | |
1119 | ||
1120 | grp->pins = devm_kzalloc(info->dev, grp->npins * sizeof(unsigned int), | |
1121 | GFP_KERNEL); | |
1122 | grp->data = devm_kzalloc(info->dev, grp->npins * | |
1123 | sizeof(struct rockchip_pin_config), | |
1124 | GFP_KERNEL); | |
1125 | if (!grp->pins || !grp->data) | |
1126 | return -ENOMEM; | |
1127 | ||
1128 | for (i = 0, j = 0; i < size; i += 4, j++) { | |
1129 | const __be32 *phandle; | |
1130 | struct device_node *np_config; | |
1131 | ||
1132 | num = be32_to_cpu(*list++); | |
1133 | bank = bank_num_to_bank(info, num); | |
1134 | if (IS_ERR(bank)) | |
1135 | return PTR_ERR(bank); | |
1136 | ||
1137 | grp->pins[j] = bank->pin_base + be32_to_cpu(*list++); | |
1138 | grp->data[j].func = be32_to_cpu(*list++); | |
1139 | ||
1140 | phandle = list++; | |
1141 | if (!phandle) | |
1142 | return -EINVAL; | |
1143 | ||
1144 | np_config = of_find_node_by_phandle(be32_to_cpup(phandle)); | |
1145 | ret = pinconf_generic_parse_dt_config(np_config, | |
1146 | &grp->data[j].configs, &grp->data[j].nconfigs); | |
1147 | if (ret) | |
1148 | return ret; | |
1149 | } | |
1150 | ||
1151 | return 0; | |
1152 | } | |
1153 | ||
1154 | static int rockchip_pinctrl_parse_functions(struct device_node *np, | |
1155 | struct rockchip_pinctrl *info, | |
1156 | u32 index) | |
1157 | { | |
1158 | struct device_node *child; | |
1159 | struct rockchip_pmx_func *func; | |
1160 | struct rockchip_pin_group *grp; | |
1161 | int ret; | |
1162 | static u32 grp_index; | |
1163 | u32 i = 0; | |
1164 | ||
1165 | dev_dbg(info->dev, "parse function(%d): %s\n", index, np->name); | |
1166 | ||
1167 | func = &info->functions[index]; | |
1168 | ||
1169 | /* Initialise function */ | |
1170 | func->name = np->name; | |
1171 | func->ngroups = of_get_child_count(np); | |
1172 | if (func->ngroups <= 0) | |
1173 | return 0; | |
1174 | ||
1175 | func->groups = devm_kzalloc(info->dev, | |
1176 | func->ngroups * sizeof(char *), GFP_KERNEL); | |
1177 | if (!func->groups) | |
1178 | return -ENOMEM; | |
1179 | ||
1180 | for_each_child_of_node(np, child) { | |
1181 | func->groups[i] = child->name; | |
1182 | grp = &info->groups[grp_index++]; | |
1183 | ret = rockchip_pinctrl_parse_groups(child, grp, info, i++); | |
1184 | if (ret) | |
1185 | return ret; | |
1186 | } | |
1187 | ||
1188 | return 0; | |
1189 | } | |
1190 | ||
1191 | static int rockchip_pinctrl_parse_dt(struct platform_device *pdev, | |
1192 | struct rockchip_pinctrl *info) | |
1193 | { | |
1194 | struct device *dev = &pdev->dev; | |
1195 | struct device_node *np = dev->of_node; | |
1196 | struct device_node *child; | |
1197 | int ret; | |
1198 | int i; | |
1199 | ||
1200 | rockchip_pinctrl_child_count(info, np); | |
1201 | ||
1202 | dev_dbg(&pdev->dev, "nfunctions = %d\n", info->nfunctions); | |
1203 | dev_dbg(&pdev->dev, "ngroups = %d\n", info->ngroups); | |
1204 | ||
1205 | info->functions = devm_kzalloc(dev, info->nfunctions * | |
1206 | sizeof(struct rockchip_pmx_func), | |
1207 | GFP_KERNEL); | |
1208 | if (!info->functions) { | |
1209 | dev_err(dev, "failed to allocate memory for function list\n"); | |
1210 | return -EINVAL; | |
1211 | } | |
1212 | ||
1213 | info->groups = devm_kzalloc(dev, info->ngroups * | |
1214 | sizeof(struct rockchip_pin_group), | |
1215 | GFP_KERNEL); | |
1216 | if (!info->groups) { | |
1217 | dev_err(dev, "failed allocate memory for ping group list\n"); | |
1218 | return -EINVAL; | |
1219 | } | |
1220 | ||
1221 | i = 0; | |
1222 | ||
1223 | for_each_child_of_node(np, child) { | |
65fca613 | 1224 | if (of_match_node(rockchip_bank_match, child)) |
d3e51161 | 1225 | continue; |
65fca613 | 1226 | |
d3e51161 HS |
1227 | ret = rockchip_pinctrl_parse_functions(child, info, i++); |
1228 | if (ret) { | |
1229 | dev_err(&pdev->dev, "failed to parse function\n"); | |
1230 | return ret; | |
1231 | } | |
1232 | } | |
1233 | ||
1234 | return 0; | |
1235 | } | |
1236 | ||
1237 | static int rockchip_pinctrl_register(struct platform_device *pdev, | |
1238 | struct rockchip_pinctrl *info) | |
1239 | { | |
1240 | struct pinctrl_desc *ctrldesc = &info->pctl; | |
1241 | struct pinctrl_pin_desc *pindesc, *pdesc; | |
1242 | struct rockchip_pin_bank *pin_bank; | |
1243 | int pin, bank, ret; | |
1244 | int k; | |
1245 | ||
1246 | ctrldesc->name = "rockchip-pinctrl"; | |
1247 | ctrldesc->owner = THIS_MODULE; | |
1248 | ctrldesc->pctlops = &rockchip_pctrl_ops; | |
1249 | ctrldesc->pmxops = &rockchip_pmx_ops; | |
1250 | ctrldesc->confops = &rockchip_pinconf_ops; | |
1251 | ||
1252 | pindesc = devm_kzalloc(&pdev->dev, sizeof(*pindesc) * | |
1253 | info->ctrl->nr_pins, GFP_KERNEL); | |
1254 | if (!pindesc) { | |
1255 | dev_err(&pdev->dev, "mem alloc for pin descriptors failed\n"); | |
1256 | return -ENOMEM; | |
1257 | } | |
1258 | ctrldesc->pins = pindesc; | |
1259 | ctrldesc->npins = info->ctrl->nr_pins; | |
1260 | ||
1261 | pdesc = pindesc; | |
1262 | for (bank = 0 , k = 0; bank < info->ctrl->nr_banks; bank++) { | |
1263 | pin_bank = &info->ctrl->pin_banks[bank]; | |
1264 | for (pin = 0; pin < pin_bank->nr_pins; pin++, k++) { | |
1265 | pdesc->number = k; | |
1266 | pdesc->name = kasprintf(GFP_KERNEL, "%s-%d", | |
1267 | pin_bank->name, pin); | |
1268 | pdesc++; | |
1269 | } | |
1270 | } | |
1271 | ||
0fb7dcb1 DA |
1272 | ret = rockchip_pinctrl_parse_dt(pdev, info); |
1273 | if (ret) | |
1274 | return ret; | |
1275 | ||
d3e51161 HS |
1276 | info->pctl_dev = pinctrl_register(ctrldesc, &pdev->dev, info); |
1277 | if (!info->pctl_dev) { | |
1278 | dev_err(&pdev->dev, "could not register pinctrl driver\n"); | |
1279 | return -EINVAL; | |
1280 | } | |
1281 | ||
1282 | for (bank = 0; bank < info->ctrl->nr_banks; ++bank) { | |
1283 | pin_bank = &info->ctrl->pin_banks[bank]; | |
1284 | pin_bank->grange.name = pin_bank->name; | |
1285 | pin_bank->grange.id = bank; | |
1286 | pin_bank->grange.pin_base = pin_bank->pin_base; | |
1287 | pin_bank->grange.base = pin_bank->gpio_chip.base; | |
1288 | pin_bank->grange.npins = pin_bank->gpio_chip.ngpio; | |
1289 | pin_bank->grange.gc = &pin_bank->gpio_chip; | |
1290 | pinctrl_add_gpio_range(info->pctl_dev, &pin_bank->grange); | |
1291 | } | |
1292 | ||
d3e51161 HS |
1293 | return 0; |
1294 | } | |
1295 | ||
1296 | /* | |
1297 | * GPIO handling | |
1298 | */ | |
1299 | ||
0351c287 AL |
1300 | static int rockchip_gpio_request(struct gpio_chip *chip, unsigned offset) |
1301 | { | |
1302 | return pinctrl_request_gpio(chip->base + offset); | |
1303 | } | |
1304 | ||
1305 | static void rockchip_gpio_free(struct gpio_chip *chip, unsigned offset) | |
1306 | { | |
1307 | pinctrl_free_gpio(chip->base + offset); | |
1308 | } | |
1309 | ||
d3e51161 HS |
1310 | static void rockchip_gpio_set(struct gpio_chip *gc, unsigned offset, int value) |
1311 | { | |
1312 | struct rockchip_pin_bank *bank = gc_to_pin_bank(gc); | |
1313 | void __iomem *reg = bank->reg_base + GPIO_SWPORT_DR; | |
1314 | unsigned long flags; | |
1315 | u32 data; | |
1316 | ||
1317 | spin_lock_irqsave(&bank->slock, flags); | |
1318 | ||
1319 | data = readl(reg); | |
1320 | data &= ~BIT(offset); | |
1321 | if (value) | |
1322 | data |= BIT(offset); | |
1323 | writel(data, reg); | |
1324 | ||
1325 | spin_unlock_irqrestore(&bank->slock, flags); | |
1326 | } | |
1327 | ||
1328 | /* | |
1329 | * Returns the level of the pin for input direction and setting of the DR | |
1330 | * register for output gpios. | |
1331 | */ | |
1332 | static int rockchip_gpio_get(struct gpio_chip *gc, unsigned offset) | |
1333 | { | |
1334 | struct rockchip_pin_bank *bank = gc_to_pin_bank(gc); | |
1335 | u32 data; | |
1336 | ||
1337 | data = readl(bank->reg_base + GPIO_EXT_PORT); | |
1338 | data >>= offset; | |
1339 | data &= 1; | |
1340 | return data; | |
1341 | } | |
1342 | ||
1343 | /* | |
1344 | * gpiolib gpio_direction_input callback function. The setting of the pin | |
1345 | * mux function as 'gpio input' will be handled by the pinctrl susbsystem | |
1346 | * interface. | |
1347 | */ | |
1348 | static int rockchip_gpio_direction_input(struct gpio_chip *gc, unsigned offset) | |
1349 | { | |
1350 | return pinctrl_gpio_direction_input(gc->base + offset); | |
1351 | } | |
1352 | ||
1353 | /* | |
1354 | * gpiolib gpio_direction_output callback function. The setting of the pin | |
1355 | * mux function as 'gpio output' will be handled by the pinctrl susbsystem | |
1356 | * interface. | |
1357 | */ | |
1358 | static int rockchip_gpio_direction_output(struct gpio_chip *gc, | |
1359 | unsigned offset, int value) | |
1360 | { | |
1361 | rockchip_gpio_set(gc, offset, value); | |
1362 | return pinctrl_gpio_direction_output(gc->base + offset); | |
1363 | } | |
1364 | ||
1365 | /* | |
1366 | * gpiolib gpio_to_irq callback function. Creates a mapping between a GPIO pin | |
1367 | * and a virtual IRQ, if not already present. | |
1368 | */ | |
1369 | static int rockchip_gpio_to_irq(struct gpio_chip *gc, unsigned offset) | |
1370 | { | |
1371 | struct rockchip_pin_bank *bank = gc_to_pin_bank(gc); | |
1372 | unsigned int virq; | |
1373 | ||
1374 | if (!bank->domain) | |
1375 | return -ENXIO; | |
1376 | ||
1377 | virq = irq_create_mapping(bank->domain, offset); | |
1378 | ||
1379 | return (virq) ? : -ENXIO; | |
1380 | } | |
1381 | ||
1382 | static const struct gpio_chip rockchip_gpiolib_chip = { | |
0351c287 AL |
1383 | .request = rockchip_gpio_request, |
1384 | .free = rockchip_gpio_free, | |
d3e51161 HS |
1385 | .set = rockchip_gpio_set, |
1386 | .get = rockchip_gpio_get, | |
1387 | .direction_input = rockchip_gpio_direction_input, | |
1388 | .direction_output = rockchip_gpio_direction_output, | |
1389 | .to_irq = rockchip_gpio_to_irq, | |
1390 | .owner = THIS_MODULE, | |
1391 | }; | |
1392 | ||
1393 | /* | |
1394 | * Interrupt handling | |
1395 | */ | |
1396 | ||
1397 | static void rockchip_irq_demux(unsigned int irq, struct irq_desc *desc) | |
1398 | { | |
1399 | struct irq_chip *chip = irq_get_chip(irq); | |
1400 | struct rockchip_pin_bank *bank = irq_get_handler_data(irq); | |
5a927501 | 1401 | u32 polarity = 0, data = 0; |
d3e51161 | 1402 | u32 pend; |
5a927501 | 1403 | bool edge_changed = false; |
fab262f5 | 1404 | unsigned long flags; |
d3e51161 HS |
1405 | |
1406 | dev_dbg(bank->drvdata->dev, "got irq for bank %s\n", bank->name); | |
1407 | ||
1408 | chained_irq_enter(chip, desc); | |
1409 | ||
1410 | pend = readl_relaxed(bank->reg_base + GPIO_INT_STATUS); | |
1411 | ||
5a927501 HS |
1412 | if (bank->toggle_edge_mode) { |
1413 | polarity = readl_relaxed(bank->reg_base + | |
1414 | GPIO_INT_POLARITY); | |
1415 | data = readl_relaxed(bank->reg_base + GPIO_EXT_PORT); | |
1416 | } | |
1417 | ||
d3e51161 HS |
1418 | while (pend) { |
1419 | unsigned int virq; | |
1420 | ||
1421 | irq = __ffs(pend); | |
1422 | pend &= ~BIT(irq); | |
1423 | virq = irq_linear_revmap(bank->domain, irq); | |
1424 | ||
1425 | if (!virq) { | |
1426 | dev_err(bank->drvdata->dev, "unmapped irq %d\n", irq); | |
1427 | continue; | |
1428 | } | |
1429 | ||
1430 | dev_dbg(bank->drvdata->dev, "handling irq %d\n", irq); | |
1431 | ||
5a927501 HS |
1432 | /* |
1433 | * Triggering IRQ on both rising and falling edge | |
1434 | * needs manual intervention. | |
1435 | */ | |
1436 | if (bank->toggle_edge_mode & BIT(irq)) { | |
1437 | if (data & BIT(irq)) | |
1438 | polarity &= ~BIT(irq); | |
1439 | else | |
1440 | polarity |= BIT(irq); | |
1441 | ||
1442 | edge_changed = true; | |
1443 | } | |
1444 | ||
d3e51161 HS |
1445 | generic_handle_irq(virq); |
1446 | } | |
1447 | ||
5a927501 HS |
1448 | if (bank->toggle_edge_mode && edge_changed) { |
1449 | /* Interrupt params should only be set with ints disabled */ | |
fab262f5 DA |
1450 | spin_lock_irqsave(&bank->slock, flags); |
1451 | ||
5a927501 HS |
1452 | data = readl_relaxed(bank->reg_base + GPIO_INTEN); |
1453 | writel_relaxed(0, bank->reg_base + GPIO_INTEN); | |
1454 | writel(polarity, bank->reg_base + GPIO_INT_POLARITY); | |
1455 | writel(data, bank->reg_base + GPIO_INTEN); | |
fab262f5 DA |
1456 | |
1457 | spin_unlock_irqrestore(&bank->slock, flags); | |
5a927501 HS |
1458 | } |
1459 | ||
d3e51161 HS |
1460 | chained_irq_exit(chip, desc); |
1461 | } | |
1462 | ||
1463 | static int rockchip_irq_set_type(struct irq_data *d, unsigned int type) | |
1464 | { | |
1465 | struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d); | |
1466 | struct rockchip_pin_bank *bank = gc->private; | |
1467 | u32 mask = BIT(d->hwirq); | |
1468 | u32 polarity; | |
1469 | u32 level; | |
1470 | u32 data; | |
fab262f5 | 1471 | unsigned long flags; |
14797189 | 1472 | int ret; |
d3e51161 | 1473 | |
5a927501 | 1474 | /* make sure the pin is configured as gpio input */ |
14797189 HS |
1475 | ret = rockchip_set_mux(bank, d->hwirq, RK_FUNC_GPIO); |
1476 | if (ret < 0) | |
1477 | return ret; | |
1478 | ||
fab262f5 DA |
1479 | spin_lock_irqsave(&bank->slock, flags); |
1480 | ||
5a927501 HS |
1481 | data = readl_relaxed(bank->reg_base + GPIO_SWPORT_DDR); |
1482 | data &= ~mask; | |
1483 | writel_relaxed(data, bank->reg_base + GPIO_SWPORT_DDR); | |
1484 | ||
fab262f5 DA |
1485 | spin_unlock_irqrestore(&bank->slock, flags); |
1486 | ||
d3e51161 HS |
1487 | if (type & IRQ_TYPE_EDGE_BOTH) |
1488 | __irq_set_handler_locked(d->irq, handle_edge_irq); | |
1489 | else | |
1490 | __irq_set_handler_locked(d->irq, handle_level_irq); | |
1491 | ||
fab262f5 | 1492 | spin_lock_irqsave(&bank->slock, flags); |
d3e51161 HS |
1493 | irq_gc_lock(gc); |
1494 | ||
1495 | level = readl_relaxed(gc->reg_base + GPIO_INTTYPE_LEVEL); | |
1496 | polarity = readl_relaxed(gc->reg_base + GPIO_INT_POLARITY); | |
1497 | ||
1498 | switch (type) { | |
5a927501 HS |
1499 | case IRQ_TYPE_EDGE_BOTH: |
1500 | bank->toggle_edge_mode |= mask; | |
1501 | level |= mask; | |
1502 | ||
1503 | /* | |
1504 | * Determine gpio state. If 1 next interrupt should be falling | |
1505 | * otherwise rising. | |
1506 | */ | |
1507 | data = readl(bank->reg_base + GPIO_EXT_PORT); | |
1508 | if (data & mask) | |
1509 | polarity &= ~mask; | |
1510 | else | |
1511 | polarity |= mask; | |
1512 | break; | |
d3e51161 | 1513 | case IRQ_TYPE_EDGE_RISING: |
5a927501 | 1514 | bank->toggle_edge_mode &= ~mask; |
d3e51161 HS |
1515 | level |= mask; |
1516 | polarity |= mask; | |
1517 | break; | |
1518 | case IRQ_TYPE_EDGE_FALLING: | |
5a927501 | 1519 | bank->toggle_edge_mode &= ~mask; |
d3e51161 HS |
1520 | level |= mask; |
1521 | polarity &= ~mask; | |
1522 | break; | |
1523 | case IRQ_TYPE_LEVEL_HIGH: | |
5a927501 | 1524 | bank->toggle_edge_mode &= ~mask; |
d3e51161 HS |
1525 | level &= ~mask; |
1526 | polarity |= mask; | |
1527 | break; | |
1528 | case IRQ_TYPE_LEVEL_LOW: | |
5a927501 | 1529 | bank->toggle_edge_mode &= ~mask; |
d3e51161 HS |
1530 | level &= ~mask; |
1531 | polarity &= ~mask; | |
1532 | break; | |
1533 | default: | |
7cc5f970 | 1534 | irq_gc_unlock(gc); |
fab262f5 | 1535 | spin_unlock_irqrestore(&bank->slock, flags); |
d3e51161 HS |
1536 | return -EINVAL; |
1537 | } | |
1538 | ||
1539 | writel_relaxed(level, gc->reg_base + GPIO_INTTYPE_LEVEL); | |
1540 | writel_relaxed(polarity, gc->reg_base + GPIO_INT_POLARITY); | |
1541 | ||
1542 | irq_gc_unlock(gc); | |
fab262f5 | 1543 | spin_unlock_irqrestore(&bank->slock, flags); |
d3e51161 | 1544 | |
d3e51161 HS |
1545 | return 0; |
1546 | } | |
1547 | ||
68bda47c DA |
1548 | static void rockchip_irq_suspend(struct irq_data *d) |
1549 | { | |
1550 | struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d); | |
1551 | struct rockchip_pin_bank *bank = gc->private; | |
1552 | ||
1553 | bank->saved_enables = irq_reg_readl(gc, GPIO_INTEN); | |
1554 | irq_reg_writel(gc, gc->wake_active, GPIO_INTEN); | |
1555 | } | |
1556 | ||
1557 | static void rockchip_irq_resume(struct irq_data *d) | |
1558 | { | |
1559 | struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d); | |
1560 | struct rockchip_pin_bank *bank = gc->private; | |
1561 | ||
1562 | irq_reg_writel(gc, bank->saved_enables, GPIO_INTEN); | |
1563 | } | |
1564 | ||
d3e51161 HS |
1565 | static int rockchip_interrupts_register(struct platform_device *pdev, |
1566 | struct rockchip_pinctrl *info) | |
1567 | { | |
1568 | struct rockchip_pin_ctrl *ctrl = info->ctrl; | |
1569 | struct rockchip_pin_bank *bank = ctrl->pin_banks; | |
1570 | unsigned int clr = IRQ_NOREQUEST | IRQ_NOPROBE | IRQ_NOAUTOEN; | |
1571 | struct irq_chip_generic *gc; | |
1572 | int ret; | |
1573 | int i; | |
1574 | ||
1575 | for (i = 0; i < ctrl->nr_banks; ++i, ++bank) { | |
1576 | if (!bank->valid) { | |
1577 | dev_warn(&pdev->dev, "bank %s is not valid\n", | |
1578 | bank->name); | |
1579 | continue; | |
1580 | } | |
1581 | ||
1582 | bank->domain = irq_domain_add_linear(bank->of_node, 32, | |
1583 | &irq_generic_chip_ops, NULL); | |
1584 | if (!bank->domain) { | |
1585 | dev_warn(&pdev->dev, "could not initialize irq domain for bank %s\n", | |
1586 | bank->name); | |
1587 | continue; | |
1588 | } | |
1589 | ||
1590 | ret = irq_alloc_domain_generic_chips(bank->domain, 32, 1, | |
1591 | "rockchip_gpio_irq", handle_level_irq, | |
1592 | clr, 0, IRQ_GC_INIT_MASK_CACHE); | |
1593 | if (ret) { | |
1594 | dev_err(&pdev->dev, "could not alloc generic chips for bank %s\n", | |
1595 | bank->name); | |
1596 | irq_domain_remove(bank->domain); | |
1597 | continue; | |
1598 | } | |
1599 | ||
1600 | gc = irq_get_domain_generic_chip(bank->domain, 0); | |
1601 | gc->reg_base = bank->reg_base; | |
1602 | gc->private = bank; | |
1603 | gc->chip_types[0].regs.mask = GPIO_INTEN; | |
1604 | gc->chip_types[0].regs.ack = GPIO_PORTS_EOI; | |
1605 | gc->chip_types[0].chip.irq_ack = irq_gc_ack_set_bit; | |
1606 | gc->chip_types[0].chip.irq_mask = irq_gc_mask_clr_bit; | |
1607 | gc->chip_types[0].chip.irq_unmask = irq_gc_mask_set_bit; | |
1608 | gc->chip_types[0].chip.irq_set_wake = irq_gc_set_wake; | |
68bda47c DA |
1609 | gc->chip_types[0].chip.irq_suspend = rockchip_irq_suspend; |
1610 | gc->chip_types[0].chip.irq_resume = rockchip_irq_resume; | |
d3e51161 | 1611 | gc->chip_types[0].chip.irq_set_type = rockchip_irq_set_type; |
876d716b | 1612 | gc->wake_enabled = IRQ_MSK(bank->nr_pins); |
d3e51161 HS |
1613 | |
1614 | irq_set_handler_data(bank->irq, bank); | |
1615 | irq_set_chained_handler(bank->irq, rockchip_irq_demux); | |
1616 | } | |
1617 | ||
1618 | return 0; | |
1619 | } | |
1620 | ||
1621 | static int rockchip_gpiolib_register(struct platform_device *pdev, | |
1622 | struct rockchip_pinctrl *info) | |
1623 | { | |
1624 | struct rockchip_pin_ctrl *ctrl = info->ctrl; | |
1625 | struct rockchip_pin_bank *bank = ctrl->pin_banks; | |
1626 | struct gpio_chip *gc; | |
1627 | int ret; | |
1628 | int i; | |
1629 | ||
1630 | for (i = 0; i < ctrl->nr_banks; ++i, ++bank) { | |
1631 | if (!bank->valid) { | |
1632 | dev_warn(&pdev->dev, "bank %s is not valid\n", | |
1633 | bank->name); | |
1634 | continue; | |
1635 | } | |
1636 | ||
1637 | bank->gpio_chip = rockchip_gpiolib_chip; | |
1638 | ||
1639 | gc = &bank->gpio_chip; | |
1640 | gc->base = bank->pin_base; | |
1641 | gc->ngpio = bank->nr_pins; | |
1642 | gc->dev = &pdev->dev; | |
1643 | gc->of_node = bank->of_node; | |
1644 | gc->label = bank->name; | |
1645 | ||
1646 | ret = gpiochip_add(gc); | |
1647 | if (ret) { | |
1648 | dev_err(&pdev->dev, "failed to register gpio_chip %s, error code: %d\n", | |
1649 | gc->label, ret); | |
1650 | goto fail; | |
1651 | } | |
1652 | } | |
1653 | ||
1654 | rockchip_interrupts_register(pdev, info); | |
1655 | ||
1656 | return 0; | |
1657 | ||
1658 | fail: | |
1659 | for (--i, --bank; i >= 0; --i, --bank) { | |
1660 | if (!bank->valid) | |
1661 | continue; | |
b4e7c55d | 1662 | gpiochip_remove(&bank->gpio_chip); |
d3e51161 HS |
1663 | } |
1664 | return ret; | |
1665 | } | |
1666 | ||
1667 | static int rockchip_gpiolib_unregister(struct platform_device *pdev, | |
1668 | struct rockchip_pinctrl *info) | |
1669 | { | |
1670 | struct rockchip_pin_ctrl *ctrl = info->ctrl; | |
1671 | struct rockchip_pin_bank *bank = ctrl->pin_banks; | |
d3e51161 HS |
1672 | int i; |
1673 | ||
b4e7c55d | 1674 | for (i = 0; i < ctrl->nr_banks; ++i, ++bank) { |
d3e51161 HS |
1675 | if (!bank->valid) |
1676 | continue; | |
b4e7c55d | 1677 | gpiochip_remove(&bank->gpio_chip); |
d3e51161 HS |
1678 | } |
1679 | ||
b4e7c55d | 1680 | return 0; |
d3e51161 HS |
1681 | } |
1682 | ||
1683 | static int rockchip_get_bank_data(struct rockchip_pin_bank *bank, | |
622f3237 | 1684 | struct rockchip_pinctrl *info) |
d3e51161 HS |
1685 | { |
1686 | struct resource res; | |
751a99ab | 1687 | void __iomem *base; |
d3e51161 HS |
1688 | |
1689 | if (of_address_to_resource(bank->of_node, 0, &res)) { | |
622f3237 | 1690 | dev_err(info->dev, "cannot find IO resource for bank\n"); |
d3e51161 HS |
1691 | return -ENOENT; |
1692 | } | |
1693 | ||
622f3237 | 1694 | bank->reg_base = devm_ioremap_resource(info->dev, &res); |
d3e51161 HS |
1695 | if (IS_ERR(bank->reg_base)) |
1696 | return PTR_ERR(bank->reg_base); | |
1697 | ||
6ca5274d HS |
1698 | /* |
1699 | * special case, where parts of the pull setting-registers are | |
1700 | * part of the PMU register space | |
1701 | */ | |
1702 | if (of_device_is_compatible(bank->of_node, | |
1703 | "rockchip,rk3188-gpio-bank0")) { | |
a658efaa | 1704 | struct device_node *node; |
bfc7a42a | 1705 | |
a658efaa HS |
1706 | node = of_parse_phandle(bank->of_node->parent, |
1707 | "rockchip,pmu", 0); | |
1708 | if (!node) { | |
1709 | if (of_address_to_resource(bank->of_node, 1, &res)) { | |
1710 | dev_err(info->dev, "cannot find IO resource for bank\n"); | |
1711 | return -ENOENT; | |
1712 | } | |
1713 | ||
1714 | base = devm_ioremap_resource(info->dev, &res); | |
1715 | if (IS_ERR(base)) | |
1716 | return PTR_ERR(base); | |
1717 | rockchip_regmap_config.max_register = | |
1718 | resource_size(&res) - 4; | |
1719 | rockchip_regmap_config.name = | |
1720 | "rockchip,rk3188-gpio-bank0-pull"; | |
1721 | bank->regmap_pull = devm_regmap_init_mmio(info->dev, | |
1722 | base, | |
1723 | &rockchip_regmap_config); | |
6ca5274d | 1724 | } |
6ca5274d | 1725 | } |
65fca613 | 1726 | |
d3e51161 HS |
1727 | bank->irq = irq_of_parse_and_map(bank->of_node, 0); |
1728 | ||
1729 | bank->clk = of_clk_get(bank->of_node, 0); | |
1730 | if (IS_ERR(bank->clk)) | |
1731 | return PTR_ERR(bank->clk); | |
1732 | ||
1733 | return clk_prepare_enable(bank->clk); | |
1734 | } | |
1735 | ||
1736 | static const struct of_device_id rockchip_pinctrl_dt_match[]; | |
1737 | ||
1738 | /* retrieve the soc specific data */ | |
1739 | static struct rockchip_pin_ctrl *rockchip_pinctrl_get_soc_data( | |
1740 | struct rockchip_pinctrl *d, | |
1741 | struct platform_device *pdev) | |
1742 | { | |
1743 | const struct of_device_id *match; | |
1744 | struct device_node *node = pdev->dev.of_node; | |
1745 | struct device_node *np; | |
1746 | struct rockchip_pin_ctrl *ctrl; | |
1747 | struct rockchip_pin_bank *bank; | |
95ec8ae4 | 1748 | int grf_offs, pmu_offs, i, j; |
d3e51161 HS |
1749 | |
1750 | match = of_match_node(rockchip_pinctrl_dt_match, node); | |
1751 | ctrl = (struct rockchip_pin_ctrl *)match->data; | |
1752 | ||
1753 | for_each_child_of_node(node, np) { | |
1754 | if (!of_find_property(np, "gpio-controller", NULL)) | |
1755 | continue; | |
1756 | ||
1757 | bank = ctrl->pin_banks; | |
1758 | for (i = 0; i < ctrl->nr_banks; ++i, ++bank) { | |
1759 | if (!strcmp(bank->name, np->name)) { | |
1760 | bank->of_node = np; | |
1761 | ||
622f3237 | 1762 | if (!rockchip_get_bank_data(bank, d)) |
d3e51161 HS |
1763 | bank->valid = true; |
1764 | ||
1765 | break; | |
1766 | } | |
1767 | } | |
1768 | } | |
1769 | ||
95ec8ae4 HS |
1770 | grf_offs = ctrl->grf_mux_offset; |
1771 | pmu_offs = ctrl->pmu_mux_offset; | |
d3e51161 HS |
1772 | bank = ctrl->pin_banks; |
1773 | for (i = 0; i < ctrl->nr_banks; ++i, ++bank) { | |
6bc0d121 HS |
1774 | int bank_pins = 0; |
1775 | ||
d3e51161 HS |
1776 | spin_lock_init(&bank->slock); |
1777 | bank->drvdata = d; | |
1778 | bank->pin_base = ctrl->nr_pins; | |
1779 | ctrl->nr_pins += bank->nr_pins; | |
6bc0d121 HS |
1780 | |
1781 | /* calculate iomux offsets */ | |
1782 | for (j = 0; j < 4; j++) { | |
1783 | struct rockchip_iomux *iom = &bank->iomux[j]; | |
03716e1d | 1784 | int inc; |
6bc0d121 HS |
1785 | |
1786 | if (bank_pins >= bank->nr_pins) | |
1787 | break; | |
1788 | ||
1789 | /* preset offset value, set new start value */ | |
1790 | if (iom->offset >= 0) { | |
95ec8ae4 HS |
1791 | if (iom->type & IOMUX_SOURCE_PMU) |
1792 | pmu_offs = iom->offset; | |
1793 | else | |
1794 | grf_offs = iom->offset; | |
6bc0d121 | 1795 | } else { /* set current offset */ |
95ec8ae4 HS |
1796 | iom->offset = (iom->type & IOMUX_SOURCE_PMU) ? |
1797 | pmu_offs : grf_offs; | |
6bc0d121 HS |
1798 | } |
1799 | ||
1800 | dev_dbg(d->dev, "bank %d, iomux %d has offset 0x%x\n", | |
1801 | i, j, iom->offset); | |
1802 | ||
1803 | /* | |
1804 | * Increase offset according to iomux width. | |
03716e1d | 1805 | * 4bit iomux'es are spread over two registers. |
6bc0d121 | 1806 | */ |
03716e1d | 1807 | inc = (iom->type & IOMUX_WIDTH_4BIT) ? 8 : 4; |
95ec8ae4 HS |
1808 | if (iom->type & IOMUX_SOURCE_PMU) |
1809 | pmu_offs += inc; | |
1810 | else | |
1811 | grf_offs += inc; | |
6bc0d121 HS |
1812 | |
1813 | bank_pins += 8; | |
1814 | } | |
d3e51161 HS |
1815 | } |
1816 | ||
1817 | return ctrl; | |
1818 | } | |
1819 | ||
8dca9331 CZ |
1820 | #define RK3288_GRF_GPIO6C_IOMUX 0x64 |
1821 | #define GPIO6C6_SEL_WRITE_ENABLE BIT(28) | |
1822 | ||
1823 | static u32 rk3288_grf_gpio6c_iomux; | |
1824 | ||
9198f509 CZ |
1825 | static int __maybe_unused rockchip_pinctrl_suspend(struct device *dev) |
1826 | { | |
1827 | struct rockchip_pinctrl *info = dev_get_drvdata(dev); | |
8dca9331 CZ |
1828 | int ret = pinctrl_force_sleep(info->pctl_dev); |
1829 | ||
1830 | if (ret) | |
1831 | return ret; | |
1832 | ||
1833 | /* | |
1834 | * RK3288 GPIO6_C6 mux would be modified by Maskrom when resume, so save | |
1835 | * the setting here, and restore it at resume. | |
1836 | */ | |
1837 | if (info->ctrl->type == RK3288) { | |
1838 | ret = regmap_read(info->regmap_base, RK3288_GRF_GPIO6C_IOMUX, | |
1839 | &rk3288_grf_gpio6c_iomux); | |
1840 | if (ret) { | |
1841 | pinctrl_force_default(info->pctl_dev); | |
1842 | return ret; | |
1843 | } | |
1844 | } | |
9198f509 | 1845 | |
8dca9331 | 1846 | return 0; |
9198f509 CZ |
1847 | } |
1848 | ||
1849 | static int __maybe_unused rockchip_pinctrl_resume(struct device *dev) | |
1850 | { | |
1851 | struct rockchip_pinctrl *info = dev_get_drvdata(dev); | |
8dca9331 CZ |
1852 | int ret = regmap_write(info->regmap_base, RK3288_GRF_GPIO6C_IOMUX, |
1853 | rk3288_grf_gpio6c_iomux | | |
1854 | GPIO6C6_SEL_WRITE_ENABLE); | |
1855 | ||
1856 | if (ret) | |
1857 | return ret; | |
9198f509 CZ |
1858 | |
1859 | return pinctrl_force_default(info->pctl_dev); | |
1860 | } | |
1861 | ||
1862 | static SIMPLE_DEV_PM_OPS(rockchip_pinctrl_dev_pm_ops, rockchip_pinctrl_suspend, | |
1863 | rockchip_pinctrl_resume); | |
1864 | ||
d3e51161 HS |
1865 | static int rockchip_pinctrl_probe(struct platform_device *pdev) |
1866 | { | |
1867 | struct rockchip_pinctrl *info; | |
1868 | struct device *dev = &pdev->dev; | |
1869 | struct rockchip_pin_ctrl *ctrl; | |
14dee867 | 1870 | struct device_node *np = pdev->dev.of_node, *node; |
d3e51161 | 1871 | struct resource *res; |
751a99ab | 1872 | void __iomem *base; |
d3e51161 HS |
1873 | int ret; |
1874 | ||
1875 | if (!dev->of_node) { | |
1876 | dev_err(dev, "device tree node not found\n"); | |
1877 | return -ENODEV; | |
1878 | } | |
1879 | ||
1880 | info = devm_kzalloc(dev, sizeof(struct rockchip_pinctrl), GFP_KERNEL); | |
1881 | if (!info) | |
1882 | return -ENOMEM; | |
1883 | ||
622f3237 HS |
1884 | info->dev = dev; |
1885 | ||
d3e51161 HS |
1886 | ctrl = rockchip_pinctrl_get_soc_data(info, pdev); |
1887 | if (!ctrl) { | |
1888 | dev_err(dev, "driver data not available\n"); | |
1889 | return -EINVAL; | |
1890 | } | |
1891 | info->ctrl = ctrl; | |
d3e51161 | 1892 | |
1e747e59 HS |
1893 | node = of_parse_phandle(np, "rockchip,grf", 0); |
1894 | if (node) { | |
1895 | info->regmap_base = syscon_node_to_regmap(node); | |
1896 | if (IS_ERR(info->regmap_base)) | |
1897 | return PTR_ERR(info->regmap_base); | |
1898 | } else { | |
1899 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
751a99ab HS |
1900 | base = devm_ioremap_resource(&pdev->dev, res); |
1901 | if (IS_ERR(base)) | |
1902 | return PTR_ERR(base); | |
1903 | ||
1904 | rockchip_regmap_config.max_register = resource_size(res) - 4; | |
1e747e59 HS |
1905 | rockchip_regmap_config.name = "rockchip,pinctrl"; |
1906 | info->regmap_base = devm_regmap_init_mmio(&pdev->dev, base, | |
1907 | &rockchip_regmap_config); | |
1908 | ||
1909 | /* to check for the old dt-bindings */ | |
1910 | info->reg_size = resource_size(res); | |
1911 | ||
1912 | /* Honor the old binding, with pull registers as 2nd resource */ | |
1913 | if (ctrl->type == RK3188 && info->reg_size < 0x200) { | |
1914 | res = platform_get_resource(pdev, IORESOURCE_MEM, 1); | |
1915 | base = devm_ioremap_resource(&pdev->dev, res); | |
1916 | if (IS_ERR(base)) | |
1917 | return PTR_ERR(base); | |
1918 | ||
1919 | rockchip_regmap_config.max_register = | |
1920 | resource_size(res) - 4; | |
1921 | rockchip_regmap_config.name = "rockchip,pinctrl-pull"; | |
1922 | info->regmap_pull = devm_regmap_init_mmio(&pdev->dev, | |
1923 | base, | |
1924 | &rockchip_regmap_config); | |
1925 | } | |
6ca5274d HS |
1926 | } |
1927 | ||
14dee867 HS |
1928 | /* try to find the optional reference to the pmu syscon */ |
1929 | node = of_parse_phandle(np, "rockchip,pmu", 0); | |
1930 | if (node) { | |
1931 | info->regmap_pmu = syscon_node_to_regmap(node); | |
1932 | if (IS_ERR(info->regmap_pmu)) | |
1933 | return PTR_ERR(info->regmap_pmu); | |
1934 | } | |
1935 | ||
d3e51161 HS |
1936 | ret = rockchip_gpiolib_register(pdev, info); |
1937 | if (ret) | |
1938 | return ret; | |
1939 | ||
1940 | ret = rockchip_pinctrl_register(pdev, info); | |
1941 | if (ret) { | |
1942 | rockchip_gpiolib_unregister(pdev, info); | |
1943 | return ret; | |
1944 | } | |
1945 | ||
1946 | platform_set_drvdata(pdev, info); | |
1947 | ||
1948 | return 0; | |
1949 | } | |
1950 | ||
1951 | static struct rockchip_pin_bank rk2928_pin_banks[] = { | |
1952 | PIN_BANK(0, 32, "gpio0"), | |
1953 | PIN_BANK(1, 32, "gpio1"), | |
1954 | PIN_BANK(2, 32, "gpio2"), | |
1955 | PIN_BANK(3, 32, "gpio3"), | |
1956 | }; | |
1957 | ||
1958 | static struct rockchip_pin_ctrl rk2928_pin_ctrl = { | |
1959 | .pin_banks = rk2928_pin_banks, | |
1960 | .nr_banks = ARRAY_SIZE(rk2928_pin_banks), | |
1961 | .label = "RK2928-GPIO", | |
a282926d | 1962 | .type = RK2928, |
95ec8ae4 | 1963 | .grf_mux_offset = 0xa8, |
a282926d | 1964 | .pull_calc_reg = rk2928_calc_pull_reg_and_bit, |
d3e51161 HS |
1965 | }; |
1966 | ||
1967 | static struct rockchip_pin_bank rk3066a_pin_banks[] = { | |
1968 | PIN_BANK(0, 32, "gpio0"), | |
1969 | PIN_BANK(1, 32, "gpio1"), | |
1970 | PIN_BANK(2, 32, "gpio2"), | |
1971 | PIN_BANK(3, 32, "gpio3"), | |
1972 | PIN_BANK(4, 32, "gpio4"), | |
1973 | PIN_BANK(6, 16, "gpio6"), | |
1974 | }; | |
1975 | ||
1976 | static struct rockchip_pin_ctrl rk3066a_pin_ctrl = { | |
1977 | .pin_banks = rk3066a_pin_banks, | |
1978 | .nr_banks = ARRAY_SIZE(rk3066a_pin_banks), | |
1979 | .label = "RK3066a-GPIO", | |
a282926d | 1980 | .type = RK2928, |
95ec8ae4 | 1981 | .grf_mux_offset = 0xa8, |
a282926d | 1982 | .pull_calc_reg = rk2928_calc_pull_reg_and_bit, |
d3e51161 HS |
1983 | }; |
1984 | ||
1985 | static struct rockchip_pin_bank rk3066b_pin_banks[] = { | |
1986 | PIN_BANK(0, 32, "gpio0"), | |
1987 | PIN_BANK(1, 32, "gpio1"), | |
1988 | PIN_BANK(2, 32, "gpio2"), | |
1989 | PIN_BANK(3, 32, "gpio3"), | |
1990 | }; | |
1991 | ||
1992 | static struct rockchip_pin_ctrl rk3066b_pin_ctrl = { | |
1993 | .pin_banks = rk3066b_pin_banks, | |
1994 | .nr_banks = ARRAY_SIZE(rk3066b_pin_banks), | |
1995 | .label = "RK3066b-GPIO", | |
a282926d | 1996 | .type = RK3066B, |
95ec8ae4 | 1997 | .grf_mux_offset = 0x60, |
d3e51161 HS |
1998 | }; |
1999 | ||
2000 | static struct rockchip_pin_bank rk3188_pin_banks[] = { | |
fc72c923 | 2001 | PIN_BANK_IOMUX_FLAGS(0, 32, "gpio0", IOMUX_GPIO_ONLY, 0, 0, 0), |
d3e51161 HS |
2002 | PIN_BANK(1, 32, "gpio1"), |
2003 | PIN_BANK(2, 32, "gpio2"), | |
2004 | PIN_BANK(3, 32, "gpio3"), | |
2005 | }; | |
2006 | ||
2007 | static struct rockchip_pin_ctrl rk3188_pin_ctrl = { | |
2008 | .pin_banks = rk3188_pin_banks, | |
2009 | .nr_banks = ARRAY_SIZE(rk3188_pin_banks), | |
2010 | .label = "RK3188-GPIO", | |
a282926d | 2011 | .type = RK3188, |
95ec8ae4 | 2012 | .grf_mux_offset = 0x60, |
6ca5274d | 2013 | .pull_calc_reg = rk3188_calc_pull_reg_and_bit, |
d3e51161 HS |
2014 | }; |
2015 | ||
304f077d HS |
2016 | static struct rockchip_pin_bank rk3288_pin_banks[] = { |
2017 | PIN_BANK_IOMUX_FLAGS(0, 24, "gpio0", IOMUX_SOURCE_PMU, | |
2018 | IOMUX_SOURCE_PMU, | |
2019 | IOMUX_SOURCE_PMU, | |
2020 | IOMUX_UNROUTED | |
2021 | ), | |
2022 | PIN_BANK_IOMUX_FLAGS(1, 32, "gpio1", IOMUX_UNROUTED, | |
2023 | IOMUX_UNROUTED, | |
2024 | IOMUX_UNROUTED, | |
2025 | 0 | |
2026 | ), | |
2027 | PIN_BANK_IOMUX_FLAGS(2, 32, "gpio2", 0, 0, 0, IOMUX_UNROUTED), | |
2028 | PIN_BANK_IOMUX_FLAGS(3, 32, "gpio3", 0, 0, 0, IOMUX_WIDTH_4BIT), | |
2029 | PIN_BANK_IOMUX_FLAGS(4, 32, "gpio4", IOMUX_WIDTH_4BIT, | |
2030 | IOMUX_WIDTH_4BIT, | |
2031 | 0, | |
2032 | 0 | |
2033 | ), | |
2034 | PIN_BANK_IOMUX_FLAGS(5, 32, "gpio5", IOMUX_UNROUTED, | |
2035 | 0, | |
2036 | 0, | |
2037 | IOMUX_UNROUTED | |
2038 | ), | |
2039 | PIN_BANK_IOMUX_FLAGS(6, 32, "gpio6", 0, 0, 0, IOMUX_UNROUTED), | |
2040 | PIN_BANK_IOMUX_FLAGS(7, 32, "gpio7", 0, | |
2041 | 0, | |
2042 | IOMUX_WIDTH_4BIT, | |
2043 | IOMUX_UNROUTED | |
2044 | ), | |
2045 | PIN_BANK(8, 16, "gpio8"), | |
2046 | }; | |
2047 | ||
2048 | static struct rockchip_pin_ctrl rk3288_pin_ctrl = { | |
2049 | .pin_banks = rk3288_pin_banks, | |
2050 | .nr_banks = ARRAY_SIZE(rk3288_pin_banks), | |
2051 | .label = "RK3288-GPIO", | |
66d750e1 | 2052 | .type = RK3288, |
304f077d HS |
2053 | .grf_mux_offset = 0x0, |
2054 | .pmu_mux_offset = 0x84, | |
2055 | .pull_calc_reg = rk3288_calc_pull_reg_and_bit, | |
2056 | }; | |
2057 | ||
d3e51161 HS |
2058 | static const struct of_device_id rockchip_pinctrl_dt_match[] = { |
2059 | { .compatible = "rockchip,rk2928-pinctrl", | |
2060 | .data = (void *)&rk2928_pin_ctrl }, | |
2061 | { .compatible = "rockchip,rk3066a-pinctrl", | |
2062 | .data = (void *)&rk3066a_pin_ctrl }, | |
2063 | { .compatible = "rockchip,rk3066b-pinctrl", | |
2064 | .data = (void *)&rk3066b_pin_ctrl }, | |
2065 | { .compatible = "rockchip,rk3188-pinctrl", | |
2066 | .data = (void *)&rk3188_pin_ctrl }, | |
304f077d HS |
2067 | { .compatible = "rockchip,rk3288-pinctrl", |
2068 | .data = (void *)&rk3288_pin_ctrl }, | |
d3e51161 HS |
2069 | {}, |
2070 | }; | |
2071 | MODULE_DEVICE_TABLE(of, rockchip_pinctrl_dt_match); | |
2072 | ||
2073 | static struct platform_driver rockchip_pinctrl_driver = { | |
2074 | .probe = rockchip_pinctrl_probe, | |
2075 | .driver = { | |
2076 | .name = "rockchip-pinctrl", | |
9198f509 | 2077 | .pm = &rockchip_pinctrl_dev_pm_ops, |
0be9e70d | 2078 | .of_match_table = rockchip_pinctrl_dt_match, |
d3e51161 HS |
2079 | }, |
2080 | }; | |
2081 | ||
2082 | static int __init rockchip_pinctrl_drv_register(void) | |
2083 | { | |
2084 | return platform_driver_register(&rockchip_pinctrl_driver); | |
2085 | } | |
2086 | postcore_initcall(rockchip_pinctrl_drv_register); | |
2087 | ||
2088 | MODULE_AUTHOR("Heiko Stuebner <heiko@sntech.de>"); | |
2089 | MODULE_DESCRIPTION("Rockchip pinctrl driver"); | |
2090 | MODULE_LICENSE("GPL v2"); |